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authorJaegeuk Kim <jaegeuk@kernel.org>2017-05-10 11:28:38 -0700
committerJaegeuk Kim <jaegeuk@kernel.org>2017-05-23 21:05:37 -0700
commitb9109b0e49b93b0ae663330acb36561b8f4f6905 (patch)
tree5d0820e9a803266c902d4992453f4127464bcc2d /fs
parent1919ffc0d7a300d4d8002e92ab3c6dea1974defc (diff)
downloadop-kernel-dev-b9109b0e49b93b0ae663330acb36561b8f4f6905.zip
op-kernel-dev-b9109b0e49b93b0ae663330acb36561b8f4f6905.tar.gz
f2fs: remove unnecessary read cases in merged IO flow
Merged IO flow doesn't need to care about read IOs. f2fs_submit_merged_bio -> f2fs_submit_merged_write f2fs_submit_merged_bios -> f2fs_submit_merged_writes f2fs_submit_merged_bio_cond -> f2fs_submit_merged_write_cond Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/f2fs/checkpoint.c14
-rw-r--r--fs/f2fs/data.c55
-rw-r--r--fs/f2fs/f2fs.h12
-rw-r--r--fs/f2fs/gc.c6
-rw-r--r--fs/f2fs/node.c11
-rw-r--r--fs/f2fs/segment.c11
-rw-r--r--fs/f2fs/super.c5
7 files changed, 50 insertions, 64 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 8d92f82..13828f6 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -31,7 +31,7 @@ void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io)
set_ckpt_flags(sbi, CP_ERROR_FLAG);
sbi->sb->s_flags |= MS_RDONLY;
if (!end_io)
- f2fs_flush_merged_bios(sbi);
+ f2fs_flush_merged_writes(sbi);
}
/*
@@ -247,13 +247,13 @@ static int f2fs_write_meta_page(struct page *page,
dec_page_count(sbi, F2FS_DIRTY_META);
if (wbc->for_reclaim)
- f2fs_submit_merged_bio_cond(sbi, page->mapping->host,
- 0, page->index, META, WRITE);
+ f2fs_submit_merged_write_cond(sbi, page->mapping->host,
+ 0, page->index, META);
unlock_page(page);
if (unlikely(f2fs_cp_error(sbi)))
- f2fs_submit_merged_bio(sbi, META, WRITE);
+ f2fs_submit_merged_write(sbi, META);
return 0;
@@ -356,7 +356,7 @@ continue_unlock:
}
stop:
if (nwritten)
- f2fs_submit_merged_bio(sbi, type, WRITE);
+ f2fs_submit_merged_write(sbi, type);
blk_finish_plug(&plug);
@@ -904,7 +904,7 @@ retry:
* We should submit bio, since it exists several
* wribacking dentry pages in the freeing inode.
*/
- f2fs_submit_merged_bio(sbi, DATA, WRITE);
+ f2fs_submit_merged_write(sbi, DATA);
cond_resched();
}
goto retry;
@@ -1293,7 +1293,7 @@ int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops");
- f2fs_flush_merged_bios(sbi);
+ f2fs_flush_merged_writes(sbi);
/* this is the case of multiple fstrims without any changes */
if (cpc->reason & CP_DISCARD) {
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 7c0f6bd..06bb204 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -291,14 +291,12 @@ static bool has_merged_page(struct f2fs_sb_info *sbi, struct inode *inode,
return ret;
}
-static void __f2fs_submit_merged_bio(struct f2fs_sb_info *sbi,
+static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi,
struct inode *inode, nid_t ino, pgoff_t idx,
- enum page_type type, int rw)
+ enum page_type type)
{
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];
down_write(&io->io_rwsem);
@@ -318,25 +316,24 @@ out:
up_write(&io->io_rwsem);
}
-void f2fs_submit_merged_bio(struct f2fs_sb_info *sbi, enum page_type type,
- int rw)
+void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type)
{
- __f2fs_submit_merged_bio(sbi, NULL, 0, 0, type, rw);
+ __f2fs_submit_merged_write(sbi, NULL, 0, 0, type);
}
-void f2fs_submit_merged_bio_cond(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, int rw)
+ enum page_type type)
{
if (has_merged_page(sbi, inode, ino, idx, type))
- __f2fs_submit_merged_bio(sbi, inode, ino, idx, type, rw);
+ __f2fs_submit_merged_write(sbi, inode, ino, idx, type);
}
-void f2fs_flush_merged_bios(struct f2fs_sb_info *sbi)
+void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi)
{
- f2fs_submit_merged_bio(sbi, DATA, WRITE);
- f2fs_submit_merged_bio(sbi, NODE, WRITE);
- f2fs_submit_merged_bio(sbi, META, WRITE);
+ f2fs_submit_merged_write(sbi, DATA);
+ f2fs_submit_merged_write(sbi, NODE);
+ f2fs_submit_merged_write(sbi, META);
}
/*
@@ -368,16 +365,15 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
return 0;
}
-int 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];
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));
if (fio->old_blkaddr != NEW_ADDR)
verify_block_addr(sbi, fio->old_blkaddr);
@@ -388,8 +384,7 @@ int f2fs_submit_page_mbio(struct f2fs_io_info *fio)
/* set submitted = 1 as a return value */
fio->submitted = 1;
- if (!is_read)
- inc_page_count(sbi, WB_DATA_TYPE(bio_page));
+ inc_page_count(sbi, WB_DATA_TYPE(bio_page));
down_write(&io->io_rwsem);
@@ -402,12 +397,11 @@ alloc_new:
if ((fio->type == DATA || fio->type == NODE) &&
fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) {
err = -EAGAIN;
- if (!is_read)
- dec_page_count(sbi, WB_DATA_TYPE(bio_page));
+ dec_page_count(sbi, WB_DATA_TYPE(bio_page));
goto out_fail;
}
io->bio = __bio_alloc(sbi, fio->new_blkaddr,
- BIO_MAX_PAGES, is_read);
+ BIO_MAX_PAGES, false);
io->fio = *fio;
}
@@ -421,7 +415,7 @@ alloc_new:
f2fs_trace_ios(fio, 0);
out_fail:
up_write(&io->io_rwsem);
- trace_f2fs_submit_page_mbio(fio->page, fio);
+ trace_f2fs_submit_page_write(fio->page, fio);
return err;
}
@@ -1321,7 +1315,7 @@ retry_encrypt:
/* flush pending IOs and wait for a while in the ENOMEM case */
if (PTR_ERR(fio->encrypted_page) == -ENOMEM) {
- f2fs_flush_merged_bios(fio->sbi);
+ f2fs_flush_merged_writes(fio->sbi);
congestion_wait(BLK_RW_ASYNC, HZ/50);
gfp_flags |= __GFP_NOFAIL;
goto retry_encrypt;
@@ -1513,8 +1507,7 @@ out:
ClearPageUptodate(page);
if (wbc->for_reclaim) {
- f2fs_submit_merged_bio_cond(sbi, inode, 0, page->index,
- 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;
@@ -1525,7 +1518,7 @@ out:
f2fs_balance_fs(sbi, need_balance_fs);
if (unlikely(f2fs_cp_error(sbi))) {
- f2fs_submit_merged_bio(sbi, DATA, WRITE);
+ f2fs_submit_merged_write(sbi, DATA);
submitted = NULL;
}
@@ -1684,8 +1677,8 @@ continue_unlock:
mapping->writeback_index = done_index;
if (last_idx != ULONG_MAX)
- f2fs_submit_merged_bio_cond(F2FS_M_SB(mapping), mapping->host,
- 0, last_idx, DATA, WRITE);
+ f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host,
+ 0, last_idx, DATA);
return ret;
}
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index e26999a..58697bd 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -879,7 +879,6 @@ struct f2fs_sb_info {
struct f2fs_sm_info *sm_info; /* segment manager */
/* for bio operations */
- struct f2fs_bio_info read_io; /* for read bios */
struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
struct mutex wio_mutex[NODE + 1]; /* bio ordering for NODE/DATA */
int write_io_size_bits; /* Write IO size bits */
@@ -2325,14 +2324,13 @@ void destroy_checkpoint_caches(void);
/*
* data.c
*/
-void f2fs_submit_merged_bio(struct f2fs_sb_info *sbi, enum page_type type,
- int rw);
-void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *sbi,
+void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type);
+void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
struct inode *inode, nid_t ino, pgoff_t idx,
- enum page_type type, int rw);
-void f2fs_flush_merged_bios(struct f2fs_sb_info *sbi);
+ enum page_type type);
+void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
int f2fs_submit_page_bio(struct f2fs_io_info *fio);
-int f2fs_submit_page_mbio(struct f2fs_io_info *fio);
+int f2fs_submit_page_write(struct f2fs_io_info *fio);
struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
block_t blk_addr, struct bio *bio);
int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr);
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 965fbf5..67b8715 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -670,7 +670,7 @@ static void move_encrypted_block(struct inode *inode, block_t bidx,
fio.op = REQ_OP_WRITE;
fio.op_flags = REQ_SYNC;
fio.new_blkaddr = newaddr;
- f2fs_submit_page_mbio(&fio);
+ f2fs_submit_page_write(&fio);
f2fs_update_data_blkaddr(&dn, newaddr);
set_inode_flag(inode, FI_APPEND_WRITE);
@@ -936,8 +936,8 @@ next:
}
if (gc_type == FG_GC)
- f2fs_submit_merged_bio(sbi,
- (type == SUM_TYPE_NODE) ? NODE : DATA, WRITE);
+ f2fs_submit_merged_write(sbi,
+ (type == SUM_TYPE_NODE) ? NODE : DATA);
blk_finish_plug(&plug);
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 98351a4..41bb632 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1373,15 +1373,15 @@ static int __write_node_page(struct page *page, bool atomic, bool *submitted,
up_read(&sbi->node_write);
if (wbc->for_reclaim) {
- f2fs_submit_merged_bio_cond(sbi, page->mapping->host, 0,
- page->index, NODE, WRITE);
+ f2fs_submit_merged_write_cond(sbi, page->mapping->host, 0,
+ page->index, NODE);
submitted = NULL;
}
unlock_page(page);
if (unlikely(f2fs_cp_error(sbi))) {
- f2fs_submit_merged_bio(sbi, NODE, WRITE);
+ f2fs_submit_merged_write(sbi, NODE);
submitted = NULL;
}
if (submitted)
@@ -1518,8 +1518,7 @@ continue_unlock:
}
out:
if (last_idx != ULONG_MAX)
- f2fs_submit_merged_bio_cond(sbi, NULL, ino, last_idx,
- NODE, WRITE);
+ f2fs_submit_merged_write_cond(sbi, NULL, ino, last_idx, NODE);
return ret ? -EIO: 0;
}
@@ -1625,7 +1624,7 @@ continue_unlock:
}
out:
if (nwritten)
- f2fs_submit_merged_bio(sbi, NODE, WRITE);
+ f2fs_submit_merged_write(sbi, NODE);
return ret;
}
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index de31030..38bb6759 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -328,8 +328,7 @@ static int __commit_inmem_pages(struct inode *inode,
}
if (last_idx != ULONG_MAX)
- f2fs_submit_merged_bio_cond(sbi, inode, 0, last_idx,
- DATA, WRITE);
+ f2fs_submit_merged_write_cond(sbi, inode, 0, last_idx, DATA);
if (!err)
__revoke_inmem_pages(inode, revoke_list, false, false);
@@ -2150,7 +2149,7 @@ reallocate:
&fio->new_blkaddr, sum, type);
/* writeout dirty page into bdev */
- err = f2fs_submit_page_mbio(fio);
+ err = f2fs_submit_page_write(fio);
if (err == -EAGAIN) {
fio->old_blkaddr = fio->new_blkaddr;
goto reallocate;
@@ -2177,7 +2176,7 @@ void write_meta_page(struct f2fs_sb_info *sbi, struct page *page)
fio.op_flags &= ~REQ_META;
set_page_writeback(page);
- f2fs_submit_page_mbio(&fio);
+ f2fs_submit_page_write(&fio);
}
void write_node_page(unsigned int nid, struct f2fs_io_info *fio)
@@ -2296,8 +2295,8 @@ void f2fs_wait_on_page_writeback(struct page *page,
if (PageWriteback(page)) {
struct f2fs_sb_info *sbi = F2FS_P_SB(page);
- f2fs_submit_merged_bio_cond(sbi, page->mapping->host,
- 0, page->index, type, WRITE);
+ f2fs_submit_merged_write_cond(sbi, page->mapping->host,
+ 0, page->index, type);
if (ordered)
wait_on_page_writeback(page);
else
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 397b1e8..9059939 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -817,7 +817,7 @@ static void f2fs_put_super(struct super_block *sb)
mutex_unlock(&sbi->umount_mutex);
/* our cp_error case, we can wait for any writeback page */
- f2fs_flush_merged_bios(sbi);
+ f2fs_flush_merged_writes(sbi);
iput(sbi->node_inode);
iput(sbi->meta_inode);
@@ -1966,9 +1966,6 @@ try_onemore:
set_sbi_flag(sbi, SBI_POR_DOING);
spin_lock_init(&sbi->stat_lock);
- init_rwsem(&sbi->read_io.io_rwsem);
- sbi->read_io.sbi = sbi;
- sbi->read_io.bio = NULL;
for (i = 0; i < NR_PAGE_TYPE; i++) {
init_rwsem(&sbi->write_io[i].io_rwsem);
sbi->write_io[i].sbi = sbi;
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