+// SPDX-License-Identifier: GPL-2.0
/*
* fs/f2fs/data.c
*
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/fs.h>
#include <linux/f2fs_fs.h>
/* PG_error was set if any post_read step failed */
if (bio->bi_status || PageError(page)) {
ClearPageUptodate(page);
- SetPageError(page);
+ /* will re-read again later */
+ ClearPageError(page);
} else {
SetPageUptodate(page);
}
static void f2fs_read_end_io(struct bio *bio)
{
- if (time_to_inject(F2FS_P_SB(bio_first_page_all(bio)), FAULT_IO)) {
- f2fs_show_injection_info(FAULT_IO);
+ if (time_to_inject(F2FS_P_SB(bio_first_page_all(bio)),
+ FAULT_READ_IO)) {
+ f2fs_show_injection_info(FAULT_READ_IO);
bio->bi_status = BLK_STS_IOERR;
}
struct bio_vec *bvec;
int i;
+ if (time_to_inject(sbi, FAULT_WRITE_IO)) {
+ f2fs_show_injection_info(FAULT_WRITE_IO);
+ bio->bi_status = BLK_STS_IOERR;
+ }
+
bio_for_each_segment_all(bvec, bio, i) {
struct page *page = bvec->bv_page;
enum count_type type = WB_DATA_TYPE(page);
io->bio = NULL;
}
-static bool __has_merged_page(struct f2fs_bio_info *io,
- struct inode *inode, nid_t ino, pgoff_t idx)
+static bool __has_merged_page(struct f2fs_bio_info *io, struct inode *inode,
+ struct page *page, nid_t ino)
{
struct bio_vec *bvec;
struct page *target;
if (!io->bio)
return false;
- if (!inode && !ino)
+ if (!inode && !page && !ino)
return true;
bio_for_each_segment_all(bvec, io->bio, i) {
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;
}
}
static bool has_merged_page(struct f2fs_sb_info *sbi, struct inode *inode,
- nid_t ino, pgoff_t idx, enum page_type type)
+ struct page *page, nid_t ino,
+ enum page_type type)
{
enum page_type btype = PAGE_TYPE_OF_BIO(type);
enum temp_type temp;
io = sbi->write_io[btype] + temp;
down_read(&io->io_rwsem);
- ret = __has_merged_page(io, inode, ino, idx);
+ ret = __has_merged_page(io, inode, page, ino);
up_read(&io->io_rwsem);
/* TODO: use HOT temp only for meta pages now. */
}
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)
+ struct inode *inode, struct page *page,
+ nid_t ino, enum page_type type, bool force)
{
enum temp_type temp;
- if (!force && !has_merged_page(sbi, inode, ino, idx, type))
+ if (!force && !has_merged_page(sbi, inode, page, ino, type))
return;
for (temp = HOT; temp < NR_TEMP_TYPE; temp++) {
}
void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
- struct inode *inode, nid_t ino, pgoff_t idx,
- enum page_type type)
+ struct inode *inode, struct page *page,
+ nid_t ino, enum page_type type)
{
- __submit_merged_write_cond(sbi, inode, ino, idx, type, false);
+ __submit_merged_write_cond(sbi, inode, page, ino, type, false);
}
void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi)
if (fio->in_list)
goto next;
out:
+ if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) ||
+ f2fs_is_checkpoint_ready(sbi))
+ __submit_merged_bio(io);
up_write(&io->io_rwsem);
}
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;
if (IS_ERR(bio))
return PTR_ERR(bio);
+ /* wait for GCed page writeback via META_MAPPING */
+ f2fs_wait_on_block_writeback(inode, blkaddr);
+
if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
bio_put(bio);
return -EFAULT;
}
+ ClearPageError(page);
__submit_bio(F2FS_I_SB(inode), bio, DATA);
return 0;
}
struct f2fs_summary sum;
struct node_info ni;
block_t old_blkaddr;
- pgoff_t fofs;
blkcnt_t count = 1;
int err;
dn->data_blkaddr = datablock_addr(dn->inode,
dn->node_page, dn->ofs_in_node);
- if (dn->data_blkaddr == NEW_ADDR)
+ if (dn->data_blkaddr != NULL_ADDR)
goto alloc;
if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count))))
old_blkaddr, old_blkaddr);
f2fs_set_data_blkaddr(dn);
- /* update i_size */
- fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page), dn->inode) +
- dn->ofs_in_node;
- if (i_size_read(dn->inode) < ((loff_t)(fofs + 1) << PAGE_SHIFT))
- f2fs_i_size_write(dn->inode,
- ((loff_t)(fofs + 1) << PAGE_SHIFT));
+ /*
+ * i_size will be updated by direct_IO. Otherwise, we'll get stale
+ * data from unwritten block via dio_read.
+ */
return 0;
}
if (direct_io) {
map.m_seg_type = f2fs_rw_hint_to_seg_type(iocb->ki_hint);
- flag = f2fs_force_buffered_io(inode, WRITE) ?
+ flag = f2fs_force_buffered_io(inode, iocb, from) ?
F2FS_GET_BLOCK_PRE_AIO :
F2FS_GET_BLOCK_PRE_DIO;
goto map_blocks;
return err;
}
-static inline void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock)
+void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock)
{
if (flag == F2FS_GET_BLOCK_PRE_AIO) {
if (lock)
goto sync_out;
}
- if (!is_valid_data_blkaddr(sbi, blkaddr)) {
+ if (is_valid_data_blkaddr(sbi, blkaddr)) {
+ /* use out-place-update for driect IO under LFS mode */
+ if (test_opt(sbi, LFS) && create &&
+ flag == F2FS_GET_BLOCK_DIO) {
+ err = __allocate_data_block(&dn, map->m_seg_type);
+ if (!err)
+ set_inode_flag(inode, FI_APPEND_WRITE);
+ }
+ } else {
if (create) {
if (unlikely(f2fs_cp_error(sbi))) {
err = -EIO;
last_ofs_in_node = dn.ofs_in_node;
}
} else {
+ WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO &&
+ flag != F2FS_GET_BLOCK_DIO);
err = __allocate_data_block(&dn,
map->m_seg_type);
if (!err)
struct buffer_head *bh_result, int create)
{
return __get_data_block(inode, iblock, bh_result, create,
- F2FS_GET_BLOCK_DEFAULT, NULL,
+ F2FS_GET_BLOCK_DIO, NULL,
f2fs_rw_hint_to_seg_type(
inode->i_write_hint));
}
}
}
+ /*
+ * If the page is under writeback, we need to wait for
+ * its completion to see the correct decrypted data.
+ */
+ f2fs_wait_on_block_writeback(inode, block_nr);
+
if (bio_add_page(bio, page, blocksize, 0) < blocksize)
goto submit_and_realloc;
+ ClearPageError(page);
last_block_in_bio = block_nr;
goto next_page;
set_error_page:
return 0;
/* wait for GCed page writeback via META_MAPPING */
- f2fs_wait_on_block_writeback(fio->sbi, fio->old_blkaddr);
+ f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
retry_encrypt:
fio->encrypted_page = fscrypt_encrypt_page(inode, fio->page,
is_inode_flag_set(inode, FI_NEED_IPU))
return true;
+ if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
+ !f2fs_is_checkpointed_data(sbi, fio->old_blkaddr)))
+ return true;
+
return false;
}
return true;
if (IS_ATOMIC_WRITTEN_PAGE(fio->page))
return true;
+ if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
+ f2fs_is_checkpointed_data(sbi, fio->old_blkaddr)))
+ return true;
}
return false;
}
ClearPageUptodate(page);
if (wbc->for_reclaim) {
- f2fs_submit_merged_write_cond(sbi, inode, 0, page->index, DATA);
+ f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA);
clear_inode_flag(inode, FI_HOT_DATA);
f2fs_remove_dirty_inode(inode);
submitted = NULL;
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);
done = 1;
break;
} else if (submitted) {
- last_idx = page->index;
+ nwritten++;
}
if (--wbc->nr_to_write <= 0 &&
if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
mapping->writeback_index = done_index;
- if (last_idx != ULONG_MAX)
+ if (nwritten)
f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host,
- 0, last_idx, DATA);
+ NULL, 0, DATA);
return ret;
}
trace_f2fs_write_begin(inode, pos, len, flags);
+ err = f2fs_is_checkpoint_ready(sbi);
+ if (err)
+ goto fail;
+
if ((f2fs_is_atomic_file(inode) &&
!f2fs_available_free_memory(sbi, INMEM_PAGES)) ||
is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
f2fs_wait_on_page_writeback(page, DATA, false);
- /* 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;
struct address_space *mapping = iocb->ki_filp->f_mapping;
struct inode *inode = mapping->host;
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ struct f2fs_inode_info *fi = F2FS_I(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;
+ bool do_opu;
err = check_direct_IO(inode, iter, offset);
if (err)
return err < 0 ? err : 0;
- if (f2fs_force_buffered_io(inode, rw))
+ if (f2fs_force_buffered_io(inode, iocb, iter))
return 0;
+ do_opu = allow_outplace_dio(inode, iocb, iter);
+
trace_f2fs_direct_IO_enter(inode, offset, count, rw);
if (rw == WRITE && whint_mode == WHINT_MODE_OFF)
iocb->ki_hint = WRITE_LIFE_NOT_SET;
- if (!down_read_trylock(&F2FS_I(inode)->i_gc_rwsem[rw])) {
- if (iocb->ki_flags & IOCB_NOWAIT) {
+ if (iocb->ki_flags & IOCB_NOWAIT) {
+ if (!down_read_trylock(&fi->i_gc_rwsem[rw])) {
iocb->ki_hint = hint;
err = -EAGAIN;
goto out;
}
- down_read(&F2FS_I(inode)->i_gc_rwsem[rw]);
+ if (do_opu && !down_read_trylock(&fi->i_gc_rwsem[READ])) {
+ up_read(&fi->i_gc_rwsem[rw]);
+ iocb->ki_hint = hint;
+ err = -EAGAIN;
+ goto out;
+ }
+ } else {
+ down_read(&fi->i_gc_rwsem[rw]);
+ if (do_opu)
+ down_read(&fi->i_gc_rwsem[READ]);
}
err = blockdev_direct_IO(iocb, inode, iter, get_data_block_dio);
- up_read(&F2FS_I(inode)->i_gc_rwsem[rw]);
+
+ if (do_opu)
+ up_read(&fi->i_gc_rwsem[READ]);
+
+ up_read(&fi->i_gc_rwsem[rw]);
if (rw == WRITE) {
if (whint_mode == WHINT_MODE_OFF)
if (err > 0) {
f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_IO,
err);
- set_inode_flag(inode, FI_UPDATE_WRITE);
+ if (!do_opu)
+ set_inode_flag(inode, FI_UPDATE_WRITE);
} else if (err < 0) {
f2fs_write_failed(mapping, offset + count);
}
git.samba.org / sfrench / cifs-2.6.git / blobdiff