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f2fs: use wait_for_stable_page to avoid contention

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In write_begin, if storage supports stable_page, we don't need to wait for
writeback to update its contents.
This patch introduces to use wait_for_stable_page instead of
wait_on_page_writeback.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2016-01-20 23:43:51 +08:00
parent 718e53fa63
commit fec1d6576c
13 changed files with 47 additions and 42 deletions
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10
fs/f2fs/gc.c
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@@ -446,7 +446,7 @@ next_step:
/* set page dirty and write it */
if (gc_type == FG_GC) {
f2fs_wait_on_page_writeback(node_page, NODE);
f2fs_wait_on_page_writeback(node_page, NODE, true);
set_page_dirty(node_page);
} else {
if (!PageWriteback(node_page))
@@ -553,7 +553,7 @@ static void move_encrypted_block(struct inode *inode, block_t bidx)
* don't cache encrypted data into meta inode until previous dirty
* data were writebacked to avoid racing between GC and flush.
*/
f2fs_wait_on_page_writeback(page, DATA);
f2fs_wait_on_page_writeback(page, DATA, true);
get_node_info(fio.sbi, dn.nid, &ni);
set_summary(&sum, dn.nid, dn.ofs_in_node, ni.version);
@@ -582,14 +582,14 @@ static void move_encrypted_block(struct inode *inode, block_t bidx)
goto put_page_out;
set_page_dirty(fio.encrypted_page);
f2fs_wait_on_page_writeback(fio.encrypted_page, DATA);
f2fs_wait_on_page_writeback(fio.encrypted_page, DATA, true);
if (clear_page_dirty_for_io(fio.encrypted_page))
dec_page_count(fio.sbi, F2FS_DIRTY_META);
set_page_writeback(fio.encrypted_page);
/* allocate block address */
f2fs_wait_on_page_writeback(dn.node_page, NODE);
f2fs_wait_on_page_writeback(dn.node_page, NODE, true);
allocate_data_block(fio.sbi, NULL, fio.blk_addr,
&fio.blk_addr, &sum, CURSEG_COLD_DATA);
fio.rw = WRITE_SYNC;
@@ -631,7 +631,7 @@ static void move_data_page(struct inode *inode, block_t bidx, int gc_type)
.encrypted_page = NULL,
};
set_page_dirty(page);
f2fs_wait_on_page_writeback(page, DATA);
f2fs_wait_on_page_writeback(page, DATA, true);
if (clear_page_dirty_for_io(page))
inode_dec_dirty_pages(inode);
set_cold_data(page);