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firmware/br-ext-chip-allwinner/board/v83x/kernel/patches/00000-fs_f2fs_data.c.patch

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diff -drupN a/fs/f2fs/data.c b/fs/f2fs/data.c
--- a/fs/f2fs/data.c 2018-08-06 17:23:04.000000000 +0300
+++ b/fs/f2fs/data.c 2022-06-12 05:28:14.000000000 +0300
@@ -19,8 +19,6 @@
#include <linux/bio.h>
#include <linux/prefetch.h>
#include <linux/uio.h>
-#include <linux/mm.h>
-#include <linux/memcontrol.h>
#include <linux/cleancache.h>
#include "f2fs.h"
@@ -28,41 +26,122 @@
#include "segment.h"
#include "trace.h"
#include <trace/events/f2fs.h>
+#include <trace/events/android_fs.h>
-static void f2fs_read_end_io(struct bio *bio)
+#define NUM_PREALLOC_POST_READ_CTXS 128
+
+static struct kmem_cache *bio_post_read_ctx_cache;
+static mempool_t *bio_post_read_ctx_pool;
+
+static bool __is_cp_guaranteed(struct page *page)
{
- struct bio_vec *bvec;
- int i;
+ struct address_space *mapping = page->mapping;
+ struct inode *inode;
+ struct f2fs_sb_info *sbi;
-#ifdef CONFIG_F2FS_FAULT_INJECTION
- if (time_to_inject(F2FS_P_SB(bio->bi_io_vec->bv_page), FAULT_IO))
- bio->bi_error = -EIO;
-#endif
+ if (!mapping)
+ return false;
- if (f2fs_bio_encrypted(bio)) {
- if (bio->bi_error) {
- fscrypt_release_ctx(bio->bi_private);
- } else {
- fscrypt_decrypt_bio_pages(bio->bi_private, bio);
- return;
- }
- }
+ inode = mapping->host;
+ sbi = F2FS_I_SB(inode);
- bio_for_each_segment_all(bvec, bio, i) {
- struct page *page = bvec->bv_page;
+ if (inode->i_ino == F2FS_META_INO(sbi) ||
+ inode->i_ino == F2FS_NODE_INO(sbi) ||
+ S_ISDIR(inode->i_mode) ||
+ is_cold_data(page))
+ return true;
+ return false;
+}
- if (!bio->bi_error) {
- if (!PageUptodate(page))
- SetPageUptodate(page);
- } else {
+/* postprocessing steps for read bios */
+enum bio_post_read_step {
+ STEP_INITIAL = 0,
+ STEP_DECRYPT,
+};
+
+struct bio_post_read_ctx {
+ struct bio *bio;
+ struct work_struct work;
+ unsigned int cur_step;
+ unsigned int enabled_steps;
+};
+
+static void __read_end_io(struct bio *bio)
+{
+ struct page *page;
+ struct bio_vec *bv;
+ int i;
+
+ bio_for_each_segment_all(bv, bio, i) {
+ page = bv->bv_page;
+
+ /* PG_error was set if any post_read step failed */
+ if (bio->bi_error || PageError(page)) {
ClearPageUptodate(page);
SetPageError(page);
+ } else {
+ SetPageUptodate(page);
}
unlock_page(page);
}
+ if (bio->bi_private)
+ mempool_free(bio->bi_private, bio_post_read_ctx_pool);
bio_put(bio);
}
+static void bio_post_read_processing(struct bio_post_read_ctx *ctx);
+
+static void decrypt_work(struct work_struct *work)
+{
+ struct bio_post_read_ctx *ctx =
+ container_of(work, struct bio_post_read_ctx, work);
+
+ fscrypt_decrypt_bio(ctx->bio);
+
+ bio_post_read_processing(ctx);
+}
+
+static void bio_post_read_processing(struct bio_post_read_ctx *ctx)
+{
+ switch (++ctx->cur_step) {
+ case STEP_DECRYPT:
+ if (ctx->enabled_steps & (1 << STEP_DECRYPT)) {
+ INIT_WORK(&ctx->work, decrypt_work);
+ fscrypt_enqueue_decrypt_work(&ctx->work);
+ return;
+ }
+ ctx->cur_step++;
+ /* fall-through */
+ default:
+ __read_end_io(ctx->bio);
+ }
+}
+
+static bool f2fs_bio_post_read_required(struct bio *bio)
+{
+ return bio->bi_private && !bio->bi_error;
+}
+
+static void f2fs_read_end_io(struct bio *bio)
+{
+#ifdef CONFIG_F2FS_FAULT_INJECTION
+ if (time_to_inject(F2FS_P_SB(bio->bi_io_vec->bv_page), FAULT_IO)) {
+ f2fs_show_injection_info(FAULT_IO);
+ bio->bi_error = -EIO;
+ }
+#endif
+
+ if (f2fs_bio_post_read_required(bio)) {
+ struct bio_post_read_ctx *ctx = bio->bi_private;
+
+ ctx->cur_step = STEP_INITIAL;
+ bio_post_read_processing(ctx);
+ return;
+ }
+
+ __read_end_io(bio);
+}
+
static void f2fs_write_end_io(struct bio *bio)
{
struct f2fs_sb_info *sbi = bio->bi_private;
@@ -71,16 +150,35 @@ static void f2fs_write_end_io(struct bio
bio_for_each_segment_all(bvec, bio, i) {
struct page *page = bvec->bv_page;
+ enum count_type type = WB_DATA_TYPE(page);
+
+ if (IS_DUMMY_WRITTEN_PAGE(page)) {
+ set_page_private(page, (unsigned long)NULL);
+ ClearPagePrivate(page);
+ unlock_page(page);
+ mempool_free(page, sbi->write_io_dummy);
+
+ if (unlikely(bio->bi_error))
+ f2fs_stop_checkpoint(sbi, true);
+ continue;
+ }
fscrypt_pullback_bio_page(&page, true);
if (unlikely(bio->bi_error)) {
mapping_set_error(page->mapping, -EIO);
- f2fs_stop_checkpoint(sbi, true);
+ if (type == F2FS_WB_CP_DATA)
+ f2fs_stop_checkpoint(sbi, true);
}
+
+ f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) &&
+ page->index != nid_of_node(page));
+
+ dec_page_count(sbi, type);
+ clear_cold_data(page);
end_page_writeback(page);
}
- if (atomic_dec_and_test(&sbi->nr_wb_bios) &&
+ if (!get_pages(sbi, F2FS_WB_CP_DATA) &&
wq_has_sleeper(&sbi->cp_wait))
wake_up(&sbi->cp_wait);
@@ -88,19 +186,68 @@ static void f2fs_write_end_io(struct bio
}
/*
+ * Return true, if pre_bio's bdev is same as its target device.
+ */
+struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
+ block_t blk_addr, struct bio *bio)
+{
+ struct block_device *bdev = sbi->sb->s_bdev;
+ int i;
+
+ for (i = 0; i < sbi->s_ndevs; i++) {
+ if (FDEV(i).start_blk <= blk_addr &&
+ FDEV(i).end_blk >= blk_addr) {
+ blk_addr -= FDEV(i).start_blk;
+ bdev = FDEV(i).bdev;
+ break;
+ }
+ }
+ if (bio) {
+ bio->bi_bdev = bdev;
+ bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr);
+ }
+ return bdev;
+}
+
+int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr)
+{
+ int i;
+
+ for (i = 0; i < sbi->s_ndevs; i++)
+ if (FDEV(i).start_blk <= blkaddr && FDEV(i).end_blk >= blkaddr)
+ return i;
+ return 0;
+}
+
+static bool __same_bdev(struct f2fs_sb_info *sbi,
+ block_t blk_addr, struct bio *bio)
+{
+ return f2fs_target_device(sbi, blk_addr, NULL) == bio->bi_bdev;
+}
+
+/*
* Low-level block read/write IO operations.
*/
static struct bio *__bio_alloc(struct f2fs_sb_info *sbi, block_t blk_addr,
- int npages, bool is_read)
+ struct writeback_control *wbc,
+ int npages, bool is_read,
+ enum page_type type, enum temp_type temp)
{
struct bio *bio;
- bio = f2fs_bio_alloc(npages);
+ bio = f2fs_bio_alloc(sbi, npages, true);
- bio->bi_bdev = sbi->sb->s_bdev;
- bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr);
- bio->bi_end_io = is_read ? f2fs_read_end_io : f2fs_write_end_io;
- bio->bi_private = is_read ? NULL : sbi;
+ f2fs_target_device(sbi, blk_addr, bio);
+ if (is_read) {
+ bio->bi_end_io = f2fs_read_end_io;
+ bio->bi_private = NULL;
+ } else {
+ bio->bi_end_io = f2fs_write_end_io;
+ bio->bi_private = sbi;
+ bio->bi_write_hint = io_type_to_rw_hint(sbi, type, temp);
+ }
+ if (wbc)
+ wbc_init_bio(wbc, bio);
return bio;
}
@@ -109,11 +256,45 @@ static inline void __submit_bio(struct f
struct bio *bio, enum page_type type)
{
if (!is_read_io(bio_op(bio))) {
- atomic_inc(&sbi->nr_wb_bios);
- if (f2fs_sb_mounted_hmsmr(sbi->sb) &&
- current->plug && (type == DATA || type == NODE))
+ unsigned int start;
+
+ if (type != DATA && type != NODE)
+ goto submit_io;
+
+ if (f2fs_sb_has_blkzoned(sbi->sb) && current->plug)
blk_finish_plug(current->plug);
+
+ start = bio->bi_iter.bi_size >> F2FS_BLKSIZE_BITS;
+ start %= F2FS_IO_SIZE(sbi);
+
+ if (start == 0)
+ goto submit_io;
+
+ /* fill dummy pages */
+ for (; start < F2FS_IO_SIZE(sbi); start++) {
+ struct page *page =
+ mempool_alloc(sbi->write_io_dummy,
+ GFP_NOIO | __GFP_ZERO | __GFP_NOFAIL);
+ f2fs_bug_on(sbi, !page);
+
+ SetPagePrivate(page);
+ set_page_private(page, (unsigned long)DUMMY_WRITTEN_PAGE);
+ lock_page(page);
+ if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE)
+ f2fs_bug_on(sbi, 1);
+ }
+ /*
+ * In the NODE case, we lose next block address chain. So, we
+ * need to do checkpoint in f2fs_sync_file.
+ */
+ if (type == NODE)
+ set_sbi_flag(sbi, SBI_NEED_CP);
}
+submit_io:
+ if (is_read_io(bio_op(bio)))
+ trace_f2fs_submit_read_bio(sbi->sb, type, bio);
+ else
+ trace_f2fs_submit_write_bio(sbi->sb, type, bio);
submit_bio(bio);
}
@@ -124,19 +305,19 @@ static void __submit_merged_bio(struct f
if (!io->bio)
return;
+ bio_set_op_attrs(io->bio, fio->op, fio->op_flags);
+
if (is_read_io(fio->op))
- trace_f2fs_submit_read_bio(io->sbi->sb, fio, io->bio);
+ trace_f2fs_prepare_read_bio(io->sbi->sb, fio->type, io->bio);
else
- trace_f2fs_submit_write_bio(io->sbi->sb, fio, io->bio);
-
- bio_set_op_attrs(io->bio, fio->op, fio->op_flags);
+ trace_f2fs_prepare_write_bio(io->sbi->sb, fio->type, io->bio);
__submit_bio(io->sbi, io->bio, fio->type);
io->bio = NULL;
}
-static bool __has_merged_page(struct f2fs_bio_info *io, struct inode *inode,
- struct page *page, nid_t ino)
+static bool __has_merged_page(struct f2fs_bio_info *io,
+ struct inode *inode, nid_t ino, pgoff_t idx)
{
struct bio_vec *bvec;
struct page *target;
@@ -145,7 +326,7 @@ static bool __has_merged_page(struct f2f
if (!io->bio)
return false;
- if (!inode && !page && !ino)
+ if (!inode && !ino)
return true;
bio_for_each_segment_all(bvec, io->bio, i) {
@@ -155,10 +336,11 @@ static bool __has_merged_page(struct f2f
else
target = fscrypt_control_page(bvec->bv_page);
+ if (idx != target->index)
+ continue;
+
if (inode && inode == target->mapping->host)
return true;
- if (page && page == target)
- return true;
if (ino && ino == ino_of_node(target))
return true;
}
@@ -167,72 +349,88 @@ static bool __has_merged_page(struct f2f
}
static bool has_merged_page(struct f2fs_sb_info *sbi, struct inode *inode,
- struct page *page, nid_t ino,
- enum page_type type)
+ nid_t ino, pgoff_t idx, enum page_type type)
{
enum page_type btype = PAGE_TYPE_OF_BIO(type);
- struct f2fs_bio_info *io = &sbi->write_io[btype];
- bool ret;
+ enum temp_type temp;
+ struct f2fs_bio_info *io;
+ bool ret = false;
- down_read(&io->io_rwsem);
- ret = __has_merged_page(io, inode, page, ino);
- up_read(&io->io_rwsem);
+ for (temp = HOT; temp < NR_TEMP_TYPE; temp++) {
+ io = sbi->write_io[btype] + temp;
+
+ down_read(&io->io_rwsem);
+ ret = __has_merged_page(io, inode, ino, idx);
+ up_read(&io->io_rwsem);
+
+ /* TODO: use HOT temp only for meta pages now. */
+ if (ret || btype == META)
+ break;
+ }
return ret;
}
-static void __f2fs_submit_merged_bio(struct f2fs_sb_info *sbi,
- struct inode *inode, struct page *page,
- nid_t ino, enum page_type type, int rw)
+static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi,
+ enum page_type type, enum temp_type temp)
{
enum page_type btype = PAGE_TYPE_OF_BIO(type);
- struct f2fs_bio_info *io;
-
- io = is_read_io(rw) ? &sbi->read_io : &sbi->write_io[btype];
+ struct f2fs_bio_info *io = sbi->write_io[btype] + temp;
down_write(&io->io_rwsem);
- if (!__has_merged_page(io, inode, page, ino))
- goto out;
-
/* change META to META_FLUSH in the checkpoint procedure */
if (type >= META_FLUSH) {
io->fio.type = META_FLUSH;
io->fio.op = REQ_OP_WRITE;
- if (test_opt(sbi, NOBARRIER))
- io->fio.op_flags = WRITE_FLUSH | REQ_META | REQ_PRIO;
- else
- io->fio.op_flags = WRITE_FLUSH_FUA | REQ_META |
- REQ_PRIO;
+ io->fio.op_flags = REQ_META | REQ_PRIO | REQ_SYNC;
+ if (!test_opt(sbi, NOBARRIER))
+ io->fio.op_flags |= REQ_PREFLUSH | REQ_FUA;
}
__submit_merged_bio(io);
-out:
up_write(&io->io_rwsem);
}
-void f2fs_submit_merged_bio(struct f2fs_sb_info *sbi, enum page_type type,
- int rw)
+static void __submit_merged_write_cond(struct f2fs_sb_info *sbi,
+ struct inode *inode, nid_t ino, pgoff_t idx,
+ enum page_type type, bool force)
{
- __f2fs_submit_merged_bio(sbi, NULL, NULL, 0, type, rw);
+ enum temp_type temp;
+
+ if (!force && !has_merged_page(sbi, inode, ino, idx, type))
+ return;
+
+ for (temp = HOT; temp < NR_TEMP_TYPE; temp++) {
+
+ __f2fs_submit_merged_write(sbi, type, temp);
+
+ /* TODO: use HOT temp only for meta pages now. */
+ if (type >= META)
+ break;
+ }
}
-void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *sbi,
- struct inode *inode, struct page *page,
- nid_t ino, enum page_type type, int rw)
+void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type)
{
- if (has_merged_page(sbi, inode, page, ino, type))
- __f2fs_submit_merged_bio(sbi, inode, page, ino, type, rw);
+ __submit_merged_write_cond(sbi, NULL, 0, 0, type, true);
}
-void f2fs_flush_merged_bios(struct f2fs_sb_info *sbi)
+void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
+ struct inode *inode, nid_t ino, pgoff_t idx,
+ enum page_type type)
{
- f2fs_submit_merged_bio(sbi, DATA, WRITE);
- f2fs_submit_merged_bio(sbi, NODE, WRITE);
- f2fs_submit_merged_bio(sbi, META, WRITE);
+ __submit_merged_write_cond(sbi, inode, ino, idx, type, false);
+}
+
+void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi)
+{
+ f2fs_submit_merged_write(sbi, DATA);
+ f2fs_submit_merged_write(sbi, NODE);
+ f2fs_submit_merged_write(sbi, META);
}
/*
* Fill the locked page with data located in the block address.
- * Return unlocked page.
+ * A caller needs to unlock the page on failure.
*/
int f2fs_submit_page_bio(struct f2fs_io_info *fio)
{
@@ -240,11 +438,13 @@ int f2fs_submit_page_bio(struct f2fs_io_
struct page *page = fio->encrypted_page ?
fio->encrypted_page : fio->page;
+ verify_block_addr(fio, fio->new_blkaddr);
trace_f2fs_submit_page_bio(page, fio);
f2fs_trace_ios(fio, 0);
/* Allocate a new bio */
- bio = __bio_alloc(fio->sbi, fio->new_blkaddr, 1, is_read_io(fio->op));
+ bio = __bio_alloc(fio->sbi, fio->new_blkaddr, fio->io_wbc,
+ 1, is_read_io(fio->op), fio->type, fio->temp);
if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
bio_put(bio);
@@ -253,60 +453,148 @@ int f2fs_submit_page_bio(struct f2fs_io_
bio_set_op_attrs(bio, fio->op, fio->op_flags);
__submit_bio(fio->sbi, bio, fio->type);
+
+ if (!is_read_io(fio->op))
+ inc_page_count(fio->sbi, WB_DATA_TYPE(fio->page));
return 0;
}
-void f2fs_submit_page_mbio(struct f2fs_io_info *fio)
+int f2fs_submit_page_write(struct f2fs_io_info *fio)
{
struct f2fs_sb_info *sbi = fio->sbi;
enum page_type btype = PAGE_TYPE_OF_BIO(fio->type);
- struct f2fs_bio_info *io;
- bool is_read = is_read_io(fio->op);
+ struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp;
struct page *bio_page;
+ int err = 0;
- io = is_read ? &sbi->read_io : &sbi->write_io[btype];
+ f2fs_bug_on(sbi, is_read_io(fio->op));
+
+ down_write(&io->io_rwsem);
+next:
+ if (fio->in_list) {
+ spin_lock(&io->io_lock);
+ if (list_empty(&io->io_list)) {
+ spin_unlock(&io->io_lock);
+ goto out_fail;
+ }
+ fio = list_first_entry(&io->io_list,
+ struct f2fs_io_info, list);
+ list_del(&fio->list);
+ spin_unlock(&io->io_lock);
+ }
if (fio->old_blkaddr != NEW_ADDR)
- verify_block_addr(sbi, fio->old_blkaddr);
- verify_block_addr(sbi, fio->new_blkaddr);
+ verify_block_addr(fio, fio->old_blkaddr);
+ verify_block_addr(fio, fio->new_blkaddr);
- down_write(&io->io_rwsem);
+ bio_page = fio->encrypted_page ? fio->encrypted_page : fio->page;
+
+ /* set submitted = true as a return value */
+ fio->submitted = true;
+
+ inc_page_count(sbi, WB_DATA_TYPE(bio_page));
if (io->bio && (io->last_block_in_bio != fio->new_blkaddr - 1 ||
- (io->fio.op != fio->op || io->fio.op_flags != fio->op_flags)))
+ (io->fio.op != fio->op || io->fio.op_flags != fio->op_flags) ||
+ !__same_bdev(sbi, fio->new_blkaddr, io->bio)))
__submit_merged_bio(io);
alloc_new:
if (io->bio == NULL) {
- int bio_blocks = MAX_BIO_BLOCKS(sbi);
-
- io->bio = __bio_alloc(sbi, fio->new_blkaddr,
- bio_blocks, is_read);
+ if ((fio->type == DATA || fio->type == NODE) &&
+ fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) {
+ err = -EAGAIN;
+ dec_page_count(sbi, WB_DATA_TYPE(bio_page));
+ goto out_fail;
+ }
+ io->bio = __bio_alloc(sbi, fio->new_blkaddr, fio->io_wbc,
+ BIO_MAX_PAGES, false,
+ fio->type, fio->temp);
io->fio = *fio;
}
- bio_page = fio->encrypted_page ? fio->encrypted_page : fio->page;
-
- if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) <
- PAGE_SIZE) {
+ if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) < PAGE_SIZE) {
__submit_merged_bio(io);
goto alloc_new;
}
+ if (fio->io_wbc)
+ wbc_account_io(fio->io_wbc, bio_page, PAGE_SIZE);
+
io->last_block_in_bio = fio->new_blkaddr;
f2fs_trace_ios(fio, 0);
+ trace_f2fs_submit_page_write(fio->page, fio);
+
+ if (fio->in_list)
+ goto next;
+out_fail:
up_write(&io->io_rwsem);
- trace_f2fs_submit_page_mbio(fio->page, fio);
+ return err;
+}
+
+static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr,
+ unsigned nr_pages)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ struct bio *bio;
+ struct bio_post_read_ctx *ctx;
+ unsigned int post_read_steps = 0;
+
+ bio = f2fs_bio_alloc(sbi, min_t(int, nr_pages, BIO_MAX_PAGES), false);
+ if (!bio)
+ return ERR_PTR(-ENOMEM);
+ f2fs_target_device(sbi, blkaddr, bio);
+ bio->bi_end_io = f2fs_read_end_io;
+ bio_set_op_attrs(bio, REQ_OP_READ, 0);
+
+ if (f2fs_encrypted_file(inode))
+ post_read_steps |= 1 << STEP_DECRYPT;
+ if (post_read_steps) {
+ ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS);
+ if (!ctx) {
+ bio_put(bio);
+ return ERR_PTR(-ENOMEM);
+ }
+ ctx->bio = bio;
+ ctx->enabled_steps = post_read_steps;
+ bio->bi_private = ctx;
+
+ /* wait the page to be moved by cleaning */
+ f2fs_wait_on_block_writeback(sbi, blkaddr);
+ }
+
+ return bio;
+}
+
+/* This can handle encryption stuffs */
+static int f2fs_submit_page_read(struct inode *inode, struct page *page,
+ block_t blkaddr)
+{
+ struct bio *bio = f2fs_grab_read_bio(inode, blkaddr, 1);
+
+ if (IS_ERR(bio))
+ return PTR_ERR(bio);
+
+ if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
+ bio_put(bio);
+ return -EFAULT;
+ }
+ __submit_bio(F2FS_I_SB(inode), bio, DATA);
+ return 0;
}
static void __set_data_blkaddr(struct dnode_of_data *dn)
{
struct f2fs_node *rn = F2FS_NODE(dn->node_page);
__le32 *addr_array;
+ int base = 0;
+
+ if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
+ base = get_extra_isize(dn->inode);
/* Get physical address of data block */
addr_array = blkaddr_in_node(rn);
- addr_array[dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr);
+ addr_array[base + dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr);
}
/*
@@ -334,14 +622,15 @@ void f2fs_update_data_blkaddr(struct dno
int reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
+ int err;
if (!count)
return 0;
if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC)))
return -EPERM;
- if (unlikely(!inc_valid_block_count(sbi, dn->inode, &count)))
- return -ENOSPC;
+ if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count))))
+ return err;
trace_f2fs_reserve_new_blocks(dn->inode, dn->nid,
dn->ofs_in_node, count);
@@ -349,8 +638,8 @@ int reserve_new_blocks(struct dnode_of_d
f2fs_wait_on_page_writeback(dn->node_page, NODE, true);
for (; count > 0; dn->ofs_in_node++) {
- block_t blkaddr =
- datablock_addr(dn->node_page, dn->ofs_in_node);
+ block_t blkaddr = datablock_addr(dn->inode,
+ dn->node_page, dn->ofs_in_node);
if (blkaddr == NULL_ADDR) {
dn->data_blkaddr = NEW_ADDR;
__set_data_blkaddr(dn);
@@ -392,7 +681,7 @@ int f2fs_reserve_block(struct dnode_of_d
int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index)
{
- struct extent_info ei;
+ struct extent_info ei = {0,0,0};
struct inode *inode = dn->inode;
if (f2fs_lookup_extent_cache(inode, index, &ei)) {
@@ -409,18 +698,8 @@ struct page *get_read_data_page(struct i
struct address_space *mapping = inode->i_mapping;
struct dnode_of_data dn;
struct page *page;
- struct extent_info ei;
+ struct extent_info ei = {0,0,0};
int err;
- struct f2fs_io_info fio = {
- .sbi = F2FS_I_SB(inode),
- .type = DATA,
- .op = REQ_OP_READ,
- .op_flags = op_flags,
- .encrypted_page = NULL,
- };
-
- if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode))
- return read_mapping_page(mapping, index, NULL);
page = f2fs_grab_cache_page(mapping, index, for_write);
if (!page)
@@ -461,9 +740,7 @@ got_it:
return page;
}
- fio.new_blkaddr = fio.old_blkaddr = dn.data_blkaddr;
- fio.page = page;
- err = f2fs_submit_page_bio(&fio);
+ err = f2fs_submit_page_read(inode, page, dn.data_blkaddr);
if (err)
goto put_err;
return page;
@@ -483,7 +760,7 @@ struct page *find_data_page(struct inode
return page;
f2fs_put_page(page, 0);
- page = get_read_data_page(inode, index, READ_SYNC, false);
+ page = get_read_data_page(inode, index, 0, false);
if (IS_ERR(page))
return page;
@@ -509,7 +786,7 @@ struct page *get_lock_data_page(struct i
struct address_space *mapping = inode->i_mapping;
struct page *page;
repeat:
- page = get_read_data_page(inode, index, READ_SYNC, for_write);
+ page = get_read_data_page(inode, index, 0, for_write);
if (IS_ERR(page))
return page;
@@ -585,34 +862,32 @@ got_it:
return page;
}
-static int __allocate_data_block(struct dnode_of_data *dn)
+static int __allocate_data_block(struct dnode_of_data *dn, int seg_type)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
struct f2fs_summary sum;
struct node_info ni;
- int seg = CURSEG_WARM_DATA;
pgoff_t fofs;
blkcnt_t count = 1;
+ int err;
if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC)))
return -EPERM;
- dn->data_blkaddr = datablock_addr(dn->node_page, dn->ofs_in_node);
+ dn->data_blkaddr = datablock_addr(dn->inode,
+ dn->node_page, dn->ofs_in_node);
if (dn->data_blkaddr == NEW_ADDR)
goto alloc;
- if (unlikely(!inc_valid_block_count(sbi, dn->inode, &count)))
- return -ENOSPC;
+ if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count))))
+ return err;
alloc:
get_node_info(sbi, dn->nid, &ni);
set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version);
- if (dn->ofs_in_node == 0 && dn->inode_page == dn->node_page)
- seg = CURSEG_DIRECT_IO;
-
allocate_data_block(sbi, NULL, dn->data_blkaddr, &dn->data_blkaddr,
- &sum, seg);
+ &sum, seg_type, NULL, false);
set_data_blkaddr(dn);
/* update i_size */
@@ -624,11 +899,23 @@ alloc:
return 0;
}
-ssize_t f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from)
+int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from)
{
struct inode *inode = file_inode(iocb->ki_filp);
struct f2fs_map_blocks map;
- ssize_t ret = 0;
+ int flag;
+ int err = 0;
+ bool direct_io = iocb->ki_flags & IOCB_DIRECT;
+
+ /* convert inline data for Direct I/O*/
+ if (direct_io) {
+ err = f2fs_convert_inline_inode(inode);
+ if (err)
+ return err;
+ }
+
+ if (is_inode_flag_set(inode, FI_NO_PREALLOC))
+ return 0;
map.m_lblk = F2FS_BLK_ALIGN(iocb->ki_pos);
map.m_len = F2FS_BYTES_TO_BLK(iocb->ki_pos + iov_iter_count(from));
@@ -638,21 +925,49 @@ ssize_t f2fs_preallocate_blocks(struct k
map.m_len = 0;
map.m_next_pgofs = NULL;
+ map.m_next_extent = NULL;
+ map.m_seg_type = NO_CHECK_TYPE;
- if (iocb->ki_flags & IOCB_DIRECT) {
- ret = f2fs_convert_inline_inode(inode);
- if (ret)
- return ret;
- return f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
+ if (direct_io) {
+ map.m_seg_type = rw_hint_to_seg_type(iocb->ki_hint);
+ flag = f2fs_force_buffered_io(inode, WRITE) ?
+ F2FS_GET_BLOCK_PRE_AIO :
+ F2FS_GET_BLOCK_PRE_DIO;
+ goto map_blocks;
}
- if (iocb->ki_pos + iov_iter_count(from) > MAX_INLINE_DATA) {
- ret = f2fs_convert_inline_inode(inode);
- if (ret)
- return ret;
+ if (iocb->ki_pos + iov_iter_count(from) > MAX_INLINE_DATA(inode)) {
+ err = f2fs_convert_inline_inode(inode);
+ if (err)
+ return err;
+ }
+ if (f2fs_has_inline_data(inode))
+ return err;
+
+ flag = F2FS_GET_BLOCK_PRE_AIO;
+
+map_blocks:
+ err = f2fs_map_blocks(inode, &map, 1, flag);
+ if (map.m_len > 0 && err == -ENOSPC) {
+ if (!direct_io)
+ set_inode_flag(inode, FI_NO_PREALLOC);
+ err = 0;
+ }
+ return err;
+}
+
+static inline void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock)
+{
+ if (flag == F2FS_GET_BLOCK_PRE_AIO) {
+ if (lock)
+ down_read(&sbi->node_change);
+ else
+ up_read(&sbi->node_change);
+ } else {
+ if (lock)
+ f2fs_lock_op(sbi);
+ else
+ f2fs_unlock_op(sbi);
}
- if (!f2fs_has_inline_data(inode))
- return f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
- return ret;
}
/*
@@ -675,9 +990,9 @@ int f2fs_map_blocks(struct inode *inode,
int err = 0, ofs = 1;
unsigned int ofs_in_node, last_ofs_in_node;
blkcnt_t prealloc;
- struct extent_info ei;
- bool allocated = false;
+ struct extent_info ei = {0,0,0};
block_t blkaddr;
+ unsigned int start_pgofs;
if (!maxblocks)
return 0;
@@ -693,12 +1008,14 @@ int f2fs_map_blocks(struct inode *inode,
map->m_pblk = ei.blk + pgofs - ei.fofs;
map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgofs);
map->m_flags = F2FS_MAP_MAPPED;
+ if (map->m_next_extent)
+ *map->m_next_extent = pgofs + map->m_len;
goto out;
}
next_dnode:
if (create)
- f2fs_lock_op(sbi);
+ __do_map_lock(sbi, flag, true);
/* When reading holes, we need its node page */
set_new_dnode(&dn, inode, NULL, NULL, 0);
@@ -711,16 +1028,20 @@ next_dnode:
if (map->m_next_pgofs)
*map->m_next_pgofs =
get_next_page_offset(&dn, pgofs);
+ if (map->m_next_extent)
+ *map->m_next_extent =
+ get_next_page_offset(&dn, pgofs);
}
goto unlock_out;
}
+ start_pgofs = pgofs;
prealloc = 0;
last_ofs_in_node = ofs_in_node = dn.ofs_in_node;
end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
next_block:
- blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node);
+ blkaddr = datablock_addr(dn.inode, dn.node_page, dn.ofs_in_node);
if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) {
if (create) {
@@ -734,29 +1055,34 @@ next_block:
last_ofs_in_node = dn.ofs_in_node;
}
} else {
- err = __allocate_data_block(&dn);
- if (!err) {
+ err = __allocate_data_block(&dn,
+ map->m_seg_type);
+ if (!err)
set_inode_flag(inode, FI_APPEND_WRITE);
- allocated = true;
- }
}
if (err)
goto sync_out;
- map->m_flags = F2FS_MAP_NEW;
+ map->m_flags |= F2FS_MAP_NEW;
blkaddr = dn.data_blkaddr;
} else {
if (flag == F2FS_GET_BLOCK_BMAP) {
map->m_pblk = 0;
goto sync_out;
}
+ if (flag == F2FS_GET_BLOCK_PRECACHE)
+ goto sync_out;
if (flag == F2FS_GET_BLOCK_FIEMAP &&
blkaddr == NULL_ADDR) {
if (map->m_next_pgofs)
*map->m_next_pgofs = pgofs + 1;
+ goto sync_out;
}
- if (flag != F2FS_GET_BLOCK_FIEMAP ||
- blkaddr != NEW_ADDR)
+ if (flag != F2FS_GET_BLOCK_FIEMAP) {
+ /* for defragment case */
+ if (map->m_next_pgofs)
+ *map->m_next_pgofs = pgofs + 1;
goto sync_out;
+ }
}
}
@@ -793,7 +1119,6 @@ skip:
err = reserve_new_blocks(&dn, prealloc);
if (err)
goto sync_out;
- allocated = dn.node_changed;
map->m_len += dn.ofs_in_node - ofs_in_node;
if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) {
@@ -808,45 +1133,92 @@ skip:
else if (dn.ofs_in_node < end_offset)
goto next_block;
+ if (flag == F2FS_GET_BLOCK_PRECACHE) {
+ if (map->m_flags & F2FS_MAP_MAPPED) {
+ unsigned int ofs = start_pgofs - map->m_lblk;
+
+ f2fs_update_extent_cache_range(&dn,
+ start_pgofs, map->m_pblk + ofs,
+ map->m_len - ofs);
+ }
+ }
+
f2fs_put_dnode(&dn);
if (create) {
- f2fs_unlock_op(sbi);
- f2fs_balance_fs(sbi, allocated);
+ __do_map_lock(sbi, flag, false);
+ f2fs_balance_fs(sbi, dn.node_changed);
}
- allocated = false;
goto next_dnode;
sync_out:
+ if (flag == F2FS_GET_BLOCK_PRECACHE) {
+ if (map->m_flags & F2FS_MAP_MAPPED) {
+ unsigned int ofs = start_pgofs - map->m_lblk;
+
+ f2fs_update_extent_cache_range(&dn,
+ start_pgofs, map->m_pblk + ofs,
+ map->m_len - ofs);
+ }
+ if (map->m_next_extent)
+ *map->m_next_extent = pgofs + 1;
+ }
f2fs_put_dnode(&dn);
unlock_out:
if (create) {
- f2fs_unlock_op(sbi);
- f2fs_balance_fs(sbi, allocated);
+ __do_map_lock(sbi, flag, false);
+ f2fs_balance_fs(sbi, dn.node_changed);
}
out:
trace_f2fs_map_blocks(inode, map, err);
return err;
}
+bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len)
+{
+ struct f2fs_map_blocks map;
+ block_t last_lblk;
+ int err;
+
+ if (pos + len > i_size_read(inode))
+ return false;
+
+ map.m_lblk = F2FS_BYTES_TO_BLK(pos);
+ map.m_next_pgofs = NULL;
+ map.m_next_extent = NULL;
+ map.m_seg_type = NO_CHECK_TYPE;
+ last_lblk = F2FS_BLK_ALIGN(pos + len);
+
+ while (map.m_lblk < last_lblk) {
+ map.m_len = last_lblk - map.m_lblk;
+ err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
+ if (err || map.m_len == 0)
+ return false;
+ map.m_lblk += map.m_len;
+ }
+ return true;
+}
+
static int __get_data_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh, int create, int flag,
- pgoff_t *next_pgofs)
+ pgoff_t *next_pgofs, int seg_type)
{
struct f2fs_map_blocks map;
- int ret;
+ int err;
map.m_lblk = iblock;
map.m_len = bh->b_size >> inode->i_blkbits;
map.m_next_pgofs = next_pgofs;
+ map.m_next_extent = NULL;
+ map.m_seg_type = seg_type;
- ret = f2fs_map_blocks(inode, &map, create, flag);
- if (!ret) {
+ err = f2fs_map_blocks(inode, &map, create, flag);
+ if (!err) {
map_bh(bh, inode->i_sb, map.m_pblk);
bh->b_state = (bh->b_state & ~F2FS_MAP_FLAGS) | map.m_flags;
bh->b_size = (u64)map.m_len << inode->i_blkbits;
}
- return ret;
+ return err;
}
static int get_data_block(struct inode *inode, sector_t iblock,
@@ -854,14 +1226,17 @@ static int get_data_block(struct inode *
pgoff_t *next_pgofs)
{
return __get_data_block(inode, iblock, bh_result, create,
- flag, next_pgofs);
+ flag, next_pgofs,
+ NO_CHECK_TYPE);
}
static int get_data_block_dio(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
return __get_data_block(inode, iblock, bh_result, create,
- F2FS_GET_BLOCK_DIO, NULL);
+ F2FS_GET_BLOCK_DEFAULT, NULL,
+ rw_hint_to_seg_type(
+ inode->i_write_hint));
}
static int get_data_block_bmap(struct inode *inode, sector_t iblock,
@@ -872,7 +1247,8 @@ static int get_data_block_bmap(struct in
return -EFBIG;
return __get_data_block(inode, iblock, bh_result, create,
- F2FS_GET_BLOCK_BMAP, NULL);
+ F2FS_GET_BLOCK_BMAP, NULL,
+ NO_CHECK_TYPE);
}
static inline sector_t logical_to_blk(struct inode *inode, loff_t offset)
@@ -885,35 +1261,100 @@ static inline loff_t blk_to_logical(stru
return (blk << inode->i_blkbits);
}
+static int f2fs_xattr_fiemap(struct inode *inode,
+ struct fiemap_extent_info *fieinfo)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ struct page *page;
+ struct node_info ni;
+ __u64 phys = 0, len;
+ __u32 flags;
+ nid_t xnid = F2FS_I(inode)->i_xattr_nid;
+ int err = 0;
+
+ if (f2fs_has_inline_xattr(inode)) {
+ int offset;
+
+ page = f2fs_grab_cache_page(NODE_MAPPING(sbi),
+ inode->i_ino, false);
+ if (!page)
+ return -ENOMEM;
+
+ get_node_info(sbi, inode->i_ino, &ni);
+
+ phys = (__u64)blk_to_logical(inode, ni.blk_addr);
+ offset = offsetof(struct f2fs_inode, i_addr) +
+ sizeof(__le32) * (DEF_ADDRS_PER_INODE -
+ get_inline_xattr_addrs(inode));
+
+ phys += offset;
+ len = inline_xattr_size(inode);
+
+ f2fs_put_page(page, 1);
+
+ flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED;
+
+ if (!xnid)
+ flags |= FIEMAP_EXTENT_LAST;
+
+ err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags);
+ if (err || err == 1)
+ return err;
+ }
+
+ if (xnid) {
+ page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false);
+ if (!page)
+ return -ENOMEM;
+
+ get_node_info(sbi, xnid, &ni);
+
+ phys = (__u64)blk_to_logical(inode, ni.blk_addr);
+ len = inode->i_sb->s_blocksize;
+
+ f2fs_put_page(page, 1);
+
+ flags = FIEMAP_EXTENT_LAST;
+ }
+
+ if (phys)
+ err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags);
+
+ return (err < 0 ? err : 0);
+}
+
int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len)
{
struct buffer_head map_bh;
sector_t start_blk, last_blk;
pgoff_t next_pgofs;
- loff_t isize;
u64 logical = 0, phys = 0, size = 0;
u32 flags = 0;
int ret = 0;
- ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC);
- if (ret)
- return ret;
-
- if (f2fs_has_inline_data(inode)) {
- ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len);
- if (ret != -EAGAIN)
+ if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) {
+ ret = f2fs_precache_extents(inode);
+ if (ret)
return ret;
}
+ ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR);
+ if (ret)
+ return ret;
+
inode_lock(inode);
- isize = i_size_read(inode);
- if (start >= isize)
+ if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) {
+ ret = f2fs_xattr_fiemap(inode, fieinfo);
goto out;
+ }
- if (start + len > isize)
- len = isize - start;
+ if (f2fs_has_inline_data(inode)) {
+ ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len);
+ if (ret != -EAGAIN)
+ goto out;
+ }
if (logical_to_blk(inode, len) == 0)
len = blk_to_logical(inode, 1);
@@ -933,13 +1374,11 @@ next:
/* HOLE */
if (!buffer_mapped(&map_bh)) {
start_blk = next_pgofs;
- /* Go through holes util pass the EOF */
- if (blk_to_logical(inode, start_blk) < isize)
+
+ if (blk_to_logical(inode, start_blk) < blk_to_logical(inode,
+ F2FS_I_SB(inode)->max_file_blocks))
goto prep_next;
- /* Found a hole beyond isize means no more extents.
- * Note that the premise is that filesystems don't
- * punch holes beyond isize and keep size unchanged.
- */
+
flags |= FIEMAP_EXTENT_LAST;
}
@@ -977,37 +1416,6 @@ out:
return ret;
}
-static struct bio *f2fs_grab_bio(struct inode *inode, block_t blkaddr,
- unsigned nr_pages)
-{
- struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
- struct fscrypt_ctx *ctx = NULL;
- struct block_device *bdev = sbi->sb->s_bdev;
- struct bio *bio;
-
- if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) {
- ctx = fscrypt_get_ctx(inode, GFP_NOFS);
- if (IS_ERR(ctx))
- return ERR_CAST(ctx);
-
- /* wait the page to be moved by cleaning */
- f2fs_wait_on_encrypted_page_writeback(sbi, blkaddr);
- }
-
- bio = bio_alloc(GFP_KERNEL, min_t(int, nr_pages, BIO_MAX_PAGES));
- if (!bio) {
- if (ctx)
- fscrypt_release_ctx(ctx);
- return ERR_PTR(-ENOMEM);
- }
- bio->bi_bdev = bdev;
- bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blkaddr);
- bio->bi_end_io = f2fs_read_end_io;
- bio->bi_private = ctx;
-
- return bio;
-}
-
/*
* This function was originally taken from fs/mpage.c, and customized for f2fs.
* Major change was from block_size == page_size in f2fs by default.
@@ -1017,7 +1425,6 @@ static int f2fs_mpage_readpages(struct a
unsigned nr_pages)
{
struct bio *bio = NULL;
- unsigned page_idx;
sector_t last_block_in_bio = 0;
struct inode *inode = mapping->host;
const unsigned blkbits = inode->i_blkbits;
@@ -1033,12 +1440,14 @@ static int f2fs_mpage_readpages(struct a
map.m_len = 0;
map.m_flags = 0;
map.m_next_pgofs = NULL;
+ map.m_next_extent = NULL;
+ map.m_seg_type = NO_CHECK_TYPE;
- for (page_idx = 0; nr_pages; page_idx++, nr_pages--) {
-
- prefetchw(&page->flags);
+ for (; nr_pages; nr_pages--) {
if (pages) {
- page = list_entry(pages->prev, struct page, lru);
+ page = list_last_entry(pages, struct page, lru);
+
+ prefetchw(&page->flags);
list_del(&page->lru);
if (add_to_page_cache_lru(page, mapping,
page->index,
@@ -1072,7 +1481,7 @@ static int f2fs_mpage_readpages(struct a
map.m_len = last_block - block_in_file;
if (f2fs_map_blocks(inode, &map, 0,
- F2FS_GET_BLOCK_READ))
+ F2FS_GET_BLOCK_DEFAULT))
goto set_error_page;
}
got_it:
@@ -1096,18 +1505,18 @@ got_it:
* This page will go to BIO. Do we need to send this
* BIO off first?
*/
- if (bio && (last_block_in_bio != block_nr - 1)) {
+ if (bio && (last_block_in_bio != block_nr - 1 ||
+ !__same_bdev(F2FS_I_SB(inode), block_nr, bio))) {
submit_and_realloc:
__submit_bio(F2FS_I_SB(inode), bio, DATA);
bio = NULL;
}
if (bio == NULL) {
- bio = f2fs_grab_bio(inode, block_nr, nr_pages);
+ bio = f2fs_grab_read_bio(inode, block_nr, nr_pages);
if (IS_ERR(bio)) {
bio = NULL;
goto set_error_page;
}
- bio_set_op_attrs(bio, REQ_OP_READ, 0);
}
if (bio_add_page(bio, page, blocksize, 0) < blocksize)
@@ -1155,8 +1564,8 @@ static int f2fs_read_data_pages(struct f
struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
{
- struct inode *inode = file->f_mapping->host;
- struct page *page = list_entry(pages->prev, struct page, lru);
+ struct inode *inode = mapping->host;
+ struct page *page = list_last_entry(pages, struct page, lru);
trace_f2fs_readpages(inode, page, nr_pages);
@@ -1167,17 +1576,145 @@ static int f2fs_read_data_pages(struct f
return f2fs_mpage_readpages(mapping, pages, NULL, nr_pages);
}
+static int encrypt_one_page(struct f2fs_io_info *fio)
+{
+ struct inode *inode = fio->page->mapping->host;
+ gfp_t gfp_flags = GFP_NOFS;
+
+ if (!f2fs_encrypted_file(inode))
+ return 0;
+
+ /* wait for GCed page writeback via META_MAPPING */
+ f2fs_wait_on_block_writeback(fio->sbi, fio->old_blkaddr);
+
+retry_encrypt:
+ fio->encrypted_page = fscrypt_encrypt_page(inode, fio->page,
+ PAGE_SIZE, 0, fio->page->index, gfp_flags);
+ if (!IS_ERR(fio->encrypted_page))
+ return 0;
+
+ /* flush pending IOs and wait for a while in the ENOMEM case */
+ if (PTR_ERR(fio->encrypted_page) == -ENOMEM) {
+ f2fs_flush_merged_writes(fio->sbi);
+ congestion_wait(BLK_RW_ASYNC, HZ/50);
+ gfp_flags |= __GFP_NOFAIL;
+ goto retry_encrypt;
+ }
+ return PTR_ERR(fio->encrypted_page);
+}
+
+static inline bool check_inplace_update_policy(struct inode *inode,
+ struct f2fs_io_info *fio)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ unsigned int policy = SM_I(sbi)->ipu_policy;
+
+ if (policy & (0x1 << F2FS_IPU_FORCE))
+ return true;
+ if (policy & (0x1 << F2FS_IPU_SSR) && need_SSR(sbi))
+ return true;
+ if (policy & (0x1 << F2FS_IPU_UTIL) &&
+ utilization(sbi) > SM_I(sbi)->min_ipu_util)
+ return true;
+ if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && need_SSR(sbi) &&
+ utilization(sbi) > SM_I(sbi)->min_ipu_util)
+ return true;
+
+ /*
+ * IPU for rewrite async pages
+ */
+ if (policy & (0x1 << F2FS_IPU_ASYNC) &&
+ fio && fio->op == REQ_OP_WRITE &&
+ !(fio->op_flags & REQ_SYNC) &&
+ !f2fs_encrypted_inode(inode))
+ return true;
+
+ /* this is only set during fdatasync */
+ if (policy & (0x1 << F2FS_IPU_FSYNC) &&
+ is_inode_flag_set(inode, FI_NEED_IPU))
+ return true;
+
+ return false;
+}
+
+bool should_update_inplace(struct inode *inode, struct f2fs_io_info *fio)
+{
+ if (f2fs_is_pinned_file(inode))
+ return true;
+
+ /* if this is cold file, we should overwrite to avoid fragmentation */
+ if (file_is_cold(inode))
+ return true;
+
+ return check_inplace_update_policy(inode, fio);
+}
+
+bool should_update_outplace(struct inode *inode, struct f2fs_io_info *fio)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+
+ if (test_opt(sbi, LFS))
+ return true;
+ if (S_ISDIR(inode->i_mode))
+ return true;
+ if (f2fs_is_atomic_file(inode))
+ return true;
+ if (fio) {
+ if (is_cold_data(fio->page))
+ return true;
+ if (IS_ATOMIC_WRITTEN_PAGE(fio->page))
+ return true;
+ }
+ return false;
+}
+
+static inline bool need_inplace_update(struct f2fs_io_info *fio)
+{
+ struct inode *inode = fio->page->mapping->host;
+
+ if (should_update_outplace(inode, fio))
+ return false;
+
+ return should_update_inplace(inode, fio);
+}
+
+static inline bool valid_ipu_blkaddr(struct f2fs_io_info *fio)
+{
+ if (fio->old_blkaddr == NEW_ADDR)
+ return false;
+ if (fio->old_blkaddr == NULL_ADDR)
+ return false;
+ return true;
+}
+
int do_write_data_page(struct f2fs_io_info *fio)
{
struct page *page = fio->page;
struct inode *inode = page->mapping->host;
struct dnode_of_data dn;
+ struct extent_info ei = {0,0,0};
+ bool ipu_force = false;
int err = 0;
set_new_dnode(&dn, inode, NULL, NULL, 0);
+ if (need_inplace_update(fio) &&
+ f2fs_lookup_extent_cache(inode, page->index, &ei)) {
+ fio->old_blkaddr = ei.blk + page->index - ei.fofs;
+
+ if (valid_ipu_blkaddr(fio)) {
+ ipu_force = true;
+ fio->need_lock = LOCK_DONE;
+ goto got_it;
+ }
+ }
+
+ /* Deadlock due to between page->lock and f2fs_lock_op */
+ if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi))
+ return -EAGAIN;
+
err = get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
if (err)
- return err;
+ goto out;
fio->old_blkaddr = dn.data_blkaddr;
@@ -1186,57 +1723,59 @@ int do_write_data_page(struct f2fs_io_in
ClearPageUptodate(page);
goto out_writepage;
}
+got_it:
+ /*
+ * If current allocation needs SSR,
+ * it had better in-place writes for updated data.
+ */
+ if (ipu_force || (valid_ipu_blkaddr(fio) && need_inplace_update(fio))) {
+ err = encrypt_one_page(fio);
+ if (err)
+ goto out_writepage;
- if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) {
- gfp_t gfp_flags = GFP_NOFS;
+ set_page_writeback(page);
+ ClearPageError(page);
+ f2fs_put_dnode(&dn);
+ if (fio->need_lock == LOCK_REQ)
+ f2fs_unlock_op(fio->sbi);
+ err = rewrite_data_page(fio);
+ trace_f2fs_do_write_data_page(fio->page, IPU);
+ set_inode_flag(inode, FI_UPDATE_WRITE);
+ return err;
+ }
- /* wait for GCed encrypted page writeback */
- f2fs_wait_on_encrypted_page_writeback(F2FS_I_SB(inode),
- fio->old_blkaddr);
-retry_encrypt:
- fio->encrypted_page = fscrypt_encrypt_page(inode, fio->page,
- gfp_flags);
- if (IS_ERR(fio->encrypted_page)) {
- err = PTR_ERR(fio->encrypted_page);
- if (err == -ENOMEM) {
- /* flush pending ios and wait for a while */
- f2fs_flush_merged_bios(F2FS_I_SB(inode));
- congestion_wait(BLK_RW_ASYNC, HZ/50);
- gfp_flags |= __GFP_NOFAIL;
- err = 0;
- goto retry_encrypt;
- }
+ if (fio->need_lock == LOCK_RETRY) {
+ if (!f2fs_trylock_op(fio->sbi)) {
+ err = -EAGAIN;
goto out_writepage;
}
+ fio->need_lock = LOCK_REQ;
}
+ err = encrypt_one_page(fio);
+ if (err)
+ goto out_writepage;
+
set_page_writeback(page);
+ ClearPageError(page);
- /*
- * If current allocation needs SSR,
- * it had better in-place writes for updated data.
- */
- if (unlikely(fio->old_blkaddr != NEW_ADDR &&
- !is_cold_data(page) &&
- !IS_ATOMIC_WRITTEN_PAGE(page) &&
- need_inplace_update(inode))) {
- rewrite_data_page(fio);
- set_inode_flag(inode, FI_UPDATE_WRITE);
- trace_f2fs_do_write_data_page(page, IPU);
- } else {
- write_data_page(&dn, fio);
- trace_f2fs_do_write_data_page(page, OPU);
- set_inode_flag(inode, FI_APPEND_WRITE);
- if (page->index == 0)
- set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
- }
+ /* LFS mode write path */
+ write_data_page(&dn, fio);
+ trace_f2fs_do_write_data_page(page, OPU);
+ set_inode_flag(inode, FI_APPEND_WRITE);
+ if (page->index == 0)
+ set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
out_writepage:
f2fs_put_dnode(&dn);
+out:
+ if (fio->need_lock == LOCK_REQ)
+ f2fs_unlock_op(fio->sbi);
return err;
}
-static int f2fs_write_data_page(struct page *page,
- struct writeback_control *wbc)
+static int __write_data_page(struct page *page, bool *submitted,
+ struct writeback_control *wbc,
+ enum iostat_type io_type)
{
struct inode *inode = page->mapping->host;
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
@@ -1249,15 +1788,30 @@ static int f2fs_write_data_page(struct p
int err = 0;
struct f2fs_io_info fio = {
.sbi = sbi,
+ .ino = inode->i_ino,
.type = DATA,
.op = REQ_OP_WRITE,
- .op_flags = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : 0,
+ .op_flags = wbc_to_write_flags(wbc),
+ .old_blkaddr = NULL_ADDR,
.page = page,
.encrypted_page = NULL,
+ .submitted = false,
+ .need_lock = LOCK_RETRY,
+ .io_type = io_type,
+ .io_wbc = wbc,
};
trace_f2fs_writepage(page, DATA);
+ /* we should bypass data pages to proceed the kworkder jobs */
+ if (unlikely(f2fs_cp_error(sbi))) {
+ mapping_set_error(page->mapping, -EIO);
+ goto out;
+ }
+
+ if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
+ goto redirty_out;
+
if (page->index < end_index)
goto write;
@@ -1271,8 +1825,6 @@ static int f2fs_write_data_page(struct p
zero_user_segment(page, offset, PAGE_SIZE);
write:
- if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
- goto redirty_out;
if (f2fs_is_drop_cache(inode))
goto out;
/* we should not write 0'th page having journal header */
@@ -1281,14 +1833,9 @@ write:
available_free_memory(sbi, BASE_CHECK))))
goto redirty_out;
- /* we should bypass data pages to proceed the kworkder jobs */
- if (unlikely(f2fs_cp_error(sbi))) {
- mapping_set_error(page->mapping, -EIO);
- goto out;
- }
-
/* Dentry blocks are controlled by checkpoint */
if (S_ISDIR(inode->i_mode)) {
+ fio.need_lock = LOCK_DONE;
err = do_write_data_page(&fio);
goto done;
}
@@ -1297,52 +1844,91 @@ write:
need_balance_fs = true;
else if (has_not_enough_free_secs(sbi, 0, 0))
goto redirty_out;
+ else
+ set_inode_flag(inode, FI_HOT_DATA);
err = -EAGAIN;
- f2fs_lock_op(sbi);
- if (f2fs_has_inline_data(inode))
+ if (f2fs_has_inline_data(inode)) {
err = f2fs_write_inline_data(inode, page);
- if (err == -EAGAIN)
+ if (!err)
+ goto out;
+ }
+
+ if (err == -EAGAIN) {
err = do_write_data_page(&fio);
- if (F2FS_I(inode)->last_disk_size < psize)
- F2FS_I(inode)->last_disk_size = psize;
- f2fs_unlock_op(sbi);
+ if (err == -EAGAIN) {
+ fio.need_lock = LOCK_REQ;
+ err = do_write_data_page(&fio);
+ }
+ }
+
+ if (err) {
+ file_set_keep_isize(inode);
+ } else {
+ down_write(&F2FS_I(inode)->i_sem);
+ if (F2FS_I(inode)->last_disk_size < psize)
+ F2FS_I(inode)->last_disk_size = psize;
+ up_write(&F2FS_I(inode)->i_sem);
+ }
+
done:
if (err && err != -ENOENT)
goto redirty_out;
- clear_cold_data(page);
out:
inode_dec_dirty_pages(inode);
if (err)
ClearPageUptodate(page);
if (wbc->for_reclaim) {
- f2fs_submit_merged_bio_cond(sbi, NULL, page, 0, DATA, WRITE);
+ f2fs_submit_merged_write_cond(sbi, inode, 0, page->index, DATA);
+ clear_inode_flag(inode, FI_HOT_DATA);
remove_dirty_inode(inode);
+ submitted = NULL;
}
unlock_page(page);
- f2fs_balance_fs(sbi, need_balance_fs);
+ if (!S_ISDIR(inode->i_mode))
+ f2fs_balance_fs(sbi, need_balance_fs);
- if (unlikely(f2fs_cp_error(sbi)))
- f2fs_submit_merged_bio(sbi, DATA, WRITE);
+ if (unlikely(f2fs_cp_error(sbi))) {
+ f2fs_submit_merged_write(sbi, DATA);
+ submitted = NULL;
+ }
+
+ if (submitted)
+ *submitted = fio.submitted;
return 0;
redirty_out:
redirty_page_for_writepage(wbc, page);
+ /*
+ * pageout() in MM traslates EAGAIN, so calls handle_write_error()
+ * -> mapping_set_error() -> set_bit(AS_EIO, ...).
+ * file_write_and_wait_range() will see EIO error, which is critical
+ * to return value of fsync() followed by atomic_write failure to user.
+ */
+ if (!err || wbc->for_reclaim)
+ return AOP_WRITEPAGE_ACTIVATE;
unlock_page(page);
return err;
}
+static int f2fs_write_data_page(struct page *page,
+ struct writeback_control *wbc)
+{
+ return __write_data_page(page, NULL, wbc, FS_DATA_IO);
+}
+
/*
* This function was copied from write_cche_pages from mm/page-writeback.c.
* The major change is making write step of cold data page separately from
* warm/hot data page.
*/
static int f2fs_write_cache_pages(struct address_space *mapping,
- struct writeback_control *wbc)
+ struct writeback_control *wbc,
+ enum iostat_type io_type)
{
int ret = 0;
int done = 0;
@@ -1352,13 +1938,19 @@ static int f2fs_write_cache_pages(struct
pgoff_t index;
pgoff_t end; /* Inclusive */
pgoff_t done_index;
+ pgoff_t last_idx = ULONG_MAX;
int cycled;
int range_whole = 0;
int tag;
- int nwritten = 0;
pagevec_init(&pvec, 0);
+ if (get_dirty_pages(mapping->host) <=
+ SM_I(F2FS_M_SB(mapping))->min_hot_blocks)
+ set_inode_flag(mapping->host, FI_HOT_DATA);
+ else
+ clear_inode_flag(mapping->host, FI_HOT_DATA);
+
if (wbc->range_cyclic) {
writeback_index = mapping->writeback_index; /* prev offset */
index = writeback_index;
@@ -1392,6 +1984,7 @@ retry:
for (i = 0; i < nr_pages; i++) {
struct page *page = pvec.pages[i];
+ bool submitted = false;
if (page->index > end) {
done = 1;
@@ -1399,7 +1992,7 @@ retry:
}
done_index = page->index;
-
+retry_write:
lock_page(page);
if (unlikely(page->mapping != mapping)) {
@@ -1425,17 +2018,37 @@ continue_unlock:
if (!clear_page_dirty_for_io(page))
goto continue_unlock;
- ret = mapping->a_ops->writepage(page, wbc);
+ ret = __write_data_page(page, &submitted, wbc, io_type);
if (unlikely(ret)) {
+ /*
+ * keep nr_to_write, since vfs uses this to
+ * get # of written pages.
+ */
+ if (ret == AOP_WRITEPAGE_ACTIVATE) {
+ unlock_page(page);
+ ret = 0;
+ continue;
+ } else if (ret == -EAGAIN) {
+ ret = 0;
+ if (wbc->sync_mode == WB_SYNC_ALL) {
+ cond_resched();
+ congestion_wait(BLK_RW_ASYNC,
+ HZ/50);
+ goto retry_write;
+ }
+ continue;
+ }
done_index = page->index + 1;
done = 1;
break;
- } else {
- nwritten++;
+ } else if (submitted) {
+ last_idx = page->index;
}
- if (--wbc->nr_to_write <= 0 &&
- wbc->sync_mode == WB_SYNC_NONE) {
+ /* give a priority to WB_SYNC threads */
+ if ((atomic_read(&F2FS_M_SB(mapping)->wb_sync_req) ||
+ --wbc->nr_to_write <= 0) &&
+ wbc->sync_mode == WB_SYNC_NONE) {
done = 1;
break;
}
@@ -1453,15 +2066,16 @@ continue_unlock:
if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
mapping->writeback_index = done_index;
- if (nwritten)
- f2fs_submit_merged_bio_cond(F2FS_M_SB(mapping), mapping->host,
- NULL, 0, DATA, WRITE);
+ if (last_idx != ULONG_MAX)
+ f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host,
+ 0, last_idx, DATA);
return ret;
}
-static int f2fs_write_data_pages(struct address_space *mapping,
- struct writeback_control *wbc)
+int __f2fs_write_data_pages(struct address_space *mapping,
+ struct writeback_control *wbc,
+ enum iostat_type io_type)
{
struct inode *inode = mapping->host;
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
@@ -1476,6 +2090,10 @@ static int f2fs_write_data_pages(struct
if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE)
return 0;
+ /* during POR, we don't need to trigger writepage at all. */
+ if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
+ goto skip_write;
+
if (S_ISDIR(inode->i_mode) && wbc->sync_mode == WB_SYNC_NONE &&
get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) &&
available_free_memory(sbi, DIRTY_DENTS))
@@ -1485,15 +2103,20 @@ static int f2fs_write_data_pages(struct
if (is_inode_flag_set(inode, FI_DO_DEFRAG))
goto skip_write;
- /* during POR, we don't need to trigger writepage at all. */
- if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
- goto skip_write;
-
trace_f2fs_writepages(mapping->host, wbc, DATA);
+ /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */
+ if (wbc->sync_mode == WB_SYNC_ALL)
+ atomic_inc(&sbi->wb_sync_req);
+ else if (atomic_read(&sbi->wb_sync_req))
+ goto skip_write;
+
blk_start_plug(&plug);
- ret = f2fs_write_cache_pages(mapping, wbc);
+ ret = f2fs_write_cache_pages(mapping, wbc, io_type);
blk_finish_plug(&plug);
+
+ if (wbc->sync_mode == WB_SYNC_ALL)
+ atomic_dec(&sbi->wb_sync_req);
/*
* if some pages were truncated, we cannot guarantee its mapping->host
* to detect pending bios.
@@ -1508,14 +2131,26 @@ skip_write:
return 0;
}
+static int f2fs_write_data_pages(struct address_space *mapping,
+ struct writeback_control *wbc)
+{
+ struct inode *inode = mapping->host;
+
+ return __f2fs_write_data_pages(mapping, wbc,
+ F2FS_I(inode)->cp_task == current ?
+ FS_CP_DATA_IO : FS_DATA_IO);
+}
+
static void f2fs_write_failed(struct address_space *mapping, loff_t to)
{
struct inode *inode = mapping->host;
loff_t i_size = i_size_read(inode);
if (to > i_size) {
+ down_write(&F2FS_I(inode)->i_mmap_sem);
truncate_pagecache(inode, i_size);
truncate_blocks(inode, i_size, true);
+ up_write(&F2FS_I(inode)->i_mmap_sem);
}
}
@@ -1528,19 +2163,20 @@ static int prepare_write_begin(struct f2
struct dnode_of_data dn;
struct page *ipage;
bool locked = false;
- struct extent_info ei;
+ struct extent_info ei = {0,0,0};
int err = 0;
/*
* we already allocated all the blocks, so we don't need to get
* the block addresses when there is no need to fill the page.
*/
- if (!f2fs_has_inline_data(inode) && len == PAGE_SIZE)
+ if (!f2fs_has_inline_data(inode) && len == PAGE_SIZE &&
+ !is_inode_flag_set(inode, FI_NO_PREALLOC))
return 0;
if (f2fs_has_inline_data(inode) ||
(pos & PAGE_MASK) >= i_size_read(inode)) {
- f2fs_lock_op(sbi);
+ __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
locked = true;
}
restart:
@@ -1554,7 +2190,7 @@ restart:
set_new_dnode(&dn, inode, ipage, ipage, 0);
if (f2fs_has_inline_data(inode)) {
- if (pos + len <= MAX_INLINE_DATA) {
+ if (pos + len <= MAX_INLINE_DATA(inode)) {
read_inline_data(page, ipage);
set_inode_flag(inode, FI_DATA_EXIST);
if (inode->i_nlink)
@@ -1576,7 +2212,8 @@ restart:
err = get_dnode_of_data(&dn, index, LOOKUP_NODE);
if (err || dn.data_blkaddr == NULL_ADDR) {
f2fs_put_dnode(&dn);
- f2fs_lock_op(sbi);
+ __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO,
+ true);
locked = true;
goto restart;
}
@@ -1590,7 +2227,7 @@ out:
f2fs_put_dnode(&dn);
unlock_out:
if (locked)
- f2fs_unlock_op(sbi);
+ __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
return err;
}
@@ -1602,12 +2239,29 @@ static int f2fs_write_begin(struct file
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
struct page *page = NULL;
pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT;
- bool need_balance = false;
+ bool need_balance = false, drop_atomic = false;
block_t blkaddr = NULL_ADDR;
int err = 0;
+ if (trace_android_fs_datawrite_start_enabled()) {
+ char *path, pathbuf[MAX_TRACE_PATHBUF_LEN];
+
+ path = android_fstrace_get_pathname(pathbuf,
+ MAX_TRACE_PATHBUF_LEN,
+ inode);
+ trace_android_fs_datawrite_start(inode, pos, len,
+ current->pid, path,
+ current->comm);
+ }
trace_f2fs_write_begin(inode, pos, len, flags);
+ if (f2fs_is_atomic_file(inode) &&
+ !available_free_memory(sbi, INMEM_PAGES)) {
+ err = -ENOMEM;
+ drop_atomic = true;
+ goto fail;
+ }
+
/*
* We should check this at this moment to avoid deadlock on inode page
* and #0 page. The locking rule for inline_data conversion should be:
@@ -1623,7 +2277,7 @@ repeat:
* Do not use grab_cache_page_write_begin() to avoid deadlock due to
* wait_for_stable_page. Will wait that below with our IO control.
*/
- page = pagecache_get_page(mapping, index,
+ page = f2fs_pagecache_get_page(mapping, index,
FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS);
if (!page) {
err = -ENOMEM;
@@ -1650,32 +2304,25 @@ repeat:
f2fs_wait_on_page_writeback(page, DATA, false);
- /* wait for GCed encrypted page writeback */
- if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode))
- f2fs_wait_on_encrypted_page_writeback(sbi, blkaddr);
+ /* wait for GCed page writeback via META_MAPPING */
+ if (f2fs_post_read_required(inode))
+ f2fs_wait_on_block_writeback(sbi, blkaddr);
if (len == PAGE_SIZE || PageUptodate(page))
return 0;
+ if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode)) {
+ zero_user_segment(page, len, PAGE_SIZE);
+ return 0;
+ }
+
if (blkaddr == NEW_ADDR) {
zero_user_segment(page, 0, PAGE_SIZE);
SetPageUptodate(page);
} else {
- struct bio *bio;
-
- bio = f2fs_grab_bio(inode, blkaddr, 1);
- if (IS_ERR(bio)) {
- err = PTR_ERR(bio);
- goto fail;
- }
- bio_set_op_attrs(bio, REQ_OP_READ, READ_SYNC);
- if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
- bio_put(bio);
- err = -EFAULT;
+ err = f2fs_submit_page_read(inode, page, blkaddr);
+ if (err)
goto fail;
- }
-
- __submit_bio(sbi, bio, DATA);
lock_page(page);
if (unlikely(page->mapping != mapping)) {
@@ -1692,6 +2339,8 @@ repeat:
fail:
f2fs_put_page(page, 1);
f2fs_write_failed(mapping, pos + len);
+ if (drop_atomic)
+ drop_inmem_pages_all(sbi);
return err;
}
@@ -1702,6 +2351,7 @@ static int f2fs_write_end(struct file *f
{
struct inode *inode = page->mapping->host;
+ trace_android_fs_datawrite_end(inode, pos, len);
trace_f2fs_write_end(inode, pos, len, copied);
/*
@@ -1710,7 +2360,7 @@ static int f2fs_write_end(struct file *f
* let generic_perform_write() try to copy data again through copied=0.
*/
if (!PageUptodate(page)) {
- if (unlikely(copied != PAGE_SIZE))
+ if (unlikely(copied != len))
copied = 0;
else
SetPageUptodate(page);
@@ -1719,7 +2369,6 @@ static int f2fs_write_end(struct file *f
goto unlock_out;
set_page_dirty(page);
- clear_cold_data(page);
if (pos + copied > i_size_read(inode))
f2fs_i_size_write(inode, pos + copied);
@@ -1747,32 +2396,78 @@ static ssize_t f2fs_direct_IO(struct kio
{
struct address_space *mapping = iocb->ki_filp->f_mapping;
struct inode *inode = mapping->host;
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
size_t count = iov_iter_count(iter);
loff_t offset = iocb->ki_pos;
int rw = iov_iter_rw(iter);
int err;
+ enum rw_hint hint = iocb->ki_hint;
+ int whint_mode = F2FS_OPTION(sbi).whint_mode;
err = check_direct_IO(inode, iter, offset);
if (err)
return err;
- if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode))
- return 0;
- if (test_opt(F2FS_I_SB(inode), LFS))
+ if (f2fs_force_buffered_io(inode, rw))
return 0;
trace_f2fs_direct_IO_enter(inode, offset, count, rw);
- down_read(&F2FS_I(inode)->dio_rwsem[rw]);
+ if (trace_android_fs_dataread_start_enabled() &&
+ (rw == READ)) {
+ char *path, pathbuf[MAX_TRACE_PATHBUF_LEN];
+
+ path = android_fstrace_get_pathname(pathbuf,
+ MAX_TRACE_PATHBUF_LEN,
+ inode);
+ trace_android_fs_dataread_start(inode, offset,
+ count, current->pid, path,
+ current->comm);
+ }
+ if (trace_android_fs_datawrite_start_enabled() &&
+ (rw == WRITE)) {
+ char *path, pathbuf[MAX_TRACE_PATHBUF_LEN];
+
+ path = android_fstrace_get_pathname(pathbuf,
+ MAX_TRACE_PATHBUF_LEN,
+ inode);
+ trace_android_fs_datawrite_start(inode, offset, count,
+ current->pid, path,
+ current->comm);
+ }
+ if (rw == WRITE && whint_mode == WHINT_MODE_OFF)
+ iocb->ki_hint = WRITE_LIFE_NOT_SET;
+
+ if (!down_read_trylock(&F2FS_I(inode)->dio_rwsem[rw])) {
+ if (iocb->ki_flags & IOCB_NOWAIT) {
+ iocb->ki_hint = hint;
+ err = -EAGAIN;
+ goto out;
+ }
+ down_read(&F2FS_I(inode)->dio_rwsem[rw]);
+ }
+
err = blockdev_direct_IO(iocb, inode, iter, get_data_block_dio);
up_read(&F2FS_I(inode)->dio_rwsem[rw]);
if (rw == WRITE) {
- if (err > 0)
+ if (whint_mode == WHINT_MODE_OFF)
+ iocb->ki_hint = hint;
+ if (err > 0) {
+ f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_IO,
+ err);
set_inode_flag(inode, FI_UPDATE_WRITE);
- else if (err < 0)
+ } else if (err < 0) {
f2fs_write_failed(mapping, offset + count);
+ }
}
+out:
+ if (trace_android_fs_dataread_start_enabled() &&
+ (rw == READ))
+ trace_android_fs_dataread_end(inode, offset, count);
+ if (trace_android_fs_datawrite_start_enabled() &&
+ (rw == WRITE))
+ trace_android_fs_datawrite_end(inode, offset, count);
trace_f2fs_direct_IO_exit(inode, offset, count, rw, err);
@@ -1790,17 +2485,19 @@ void f2fs_invalidate_page(struct page *p
return;
if (PageDirty(page)) {
- if (inode->i_ino == F2FS_META_INO(sbi))
+ if (inode->i_ino == F2FS_META_INO(sbi)) {
dec_page_count(sbi, F2FS_DIRTY_META);
- else if (inode->i_ino == F2FS_NODE_INO(sbi))
+ } else if (inode->i_ino == F2FS_NODE_INO(sbi)) {
dec_page_count(sbi, F2FS_DIRTY_NODES);
- else
+ } else {
inode_dec_dirty_pages(inode);
+ remove_dirty_inode(inode);
+ }
}
/* This is atomic written page, keep Private */
if (IS_ATOMIC_WRITTEN_PAGE(page))
- return;
+ return drop_inmem_page(inode, page);
set_page_private(page, 0);
ClearPagePrivate(page);
@@ -1821,35 +2518,6 @@ int f2fs_release_page(struct page *page,
return 1;
}
-/*
- * This was copied from __set_page_dirty_buffers which gives higher performance
- * in very high speed storages. (e.g., pmem)
- */
-void f2fs_set_page_dirty_nobuffers(struct page *page)
-{
- struct address_space *mapping = page->mapping;
- unsigned long flags;
-
- if (unlikely(!mapping))
- return;
-
- spin_lock(&mapping->private_lock);
- lock_page_memcg(page);
- SetPageDirty(page);
- spin_unlock(&mapping->private_lock);
-
- spin_lock_irqsave(&mapping->tree_lock, flags);
- WARN_ON_ONCE(!PageUptodate(page));
- account_page_dirtied(page, mapping);
- radix_tree_tag_set(&mapping->page_tree,
- page_index(page), PAGECACHE_TAG_DIRTY);
- spin_unlock_irqrestore(&mapping->tree_lock, flags);
- unlock_page_memcg(page);
-
- __mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
- return;
-}
-
static int f2fs_set_data_page_dirty(struct page *page)
{
struct address_space *mapping = page->mapping;
@@ -1860,7 +2528,7 @@ static int f2fs_set_data_page_dirty(stru
if (!PageUptodate(page))
SetPageUptodate(page);
- if (f2fs_is_atomic_file(inode)) {
+ if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) {
if (!IS_ATOMIC_WRITTEN_PAGE(page)) {
register_inmem_page(inode, page);
return 1;
@@ -1873,7 +2541,7 @@ static int f2fs_set_data_page_dirty(stru
}
if (!PageDirty(page)) {
- f2fs_set_page_dirty_nobuffers(page);
+ __set_page_dirty_nobuffers(page);
update_dirty_page(inode, page);
return 1;
}
@@ -1907,8 +2575,12 @@ int f2fs_migrate_page(struct address_spa
BUG_ON(PageWriteback(page));
/* migrating an atomic written page is safe with the inmem_lock hold */
- if (atomic_written && !mutex_trylock(&fi->inmem_lock))
- return -EAGAIN;
+ if (atomic_written) {
+ if (mode != MIGRATE_SYNC)
+ return -EBUSY;
+ if (!mutex_trylock(&fi->inmem_lock))
+ return -EAGAIN;
+ }
/*
* A reference is expected if PagePrivate set when move mapping,
@@ -1962,3 +2634,27 @@ const struct address_space_operations f2
.migratepage = f2fs_migrate_page,
#endif
};
+
+int __init f2fs_init_post_read_processing(void)
+{
+ bio_post_read_ctx_cache = KMEM_CACHE(bio_post_read_ctx, 0);
+ if (!bio_post_read_ctx_cache)
+ goto fail;
+ bio_post_read_ctx_pool =
+ mempool_create_slab_pool(NUM_PREALLOC_POST_READ_CTXS,
+ bio_post_read_ctx_cache);
+ if (!bio_post_read_ctx_pool)
+ goto fail_free_cache;
+ return 0;
+
+fail_free_cache:
+ kmem_cache_destroy(bio_post_read_ctx_cache);
+fail:
+ return -ENOMEM;
+}
+
+void __exit f2fs_destroy_post_read_processing(void)
+{
+ mempool_destroy(bio_post_read_ctx_pool);
+ kmem_cache_destroy(bio_post_read_ctx_cache);
+}
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