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f2fs: return directly if block has been removed from the victim

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If one block has been to written to a new place, just return
in move data process. This patch check it again with holding
page lock.

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Yunlei He
2016-11-07 21:22:31 +08:00
committed by Jaegeuk Kim
parent 11895b3205
commit 908659afc0
1 changed files with 12 additions and 4 deletions
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16
fs/f2fs/gc.c
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@@ -544,7 +544,8 @@ static bool is_alive(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
return true;
}
static void move_encrypted_block(struct inode *inode, block_t bidx)
static void move_encrypted_block(struct inode *inode, block_t bidx,
unsigned int segno, int off)
{
struct f2fs_io_info fio = {
.sbi = F2FS_I_SB(inode),
@@ -564,6 +565,9 @@ static void move_encrypted_block(struct inode *inode, block_t bidx)
if (!page)
return;
if (!check_valid_map(F2FS_I_SB(inode), segno, off))
goto out;
set_new_dnode(&dn, inode, NULL, NULL, 0);
err = get_dnode_of_data(&dn, bidx, LOOKUP_NODE);
if (err)
@@ -643,7 +647,8 @@ out:
f2fs_put_page(page, 1);
}
static void move_data_page(struct inode *inode, block_t bidx, int gc_type)
static void move_data_page(struct inode *inode, block_t bidx, int gc_type,
unsigned int segno, int off)
{
struct page *page;
@@ -651,6 +656,9 @@ static void move_data_page(struct inode *inode, block_t bidx, int gc_type)
if (IS_ERR(page))
return;
if (!check_valid_map(F2FS_I_SB(inode), segno, off))
goto out;
if (gc_type == BG_GC) {
if (PageWriteback(page))
goto out;
@@ -792,9 +800,9 @@ next_step:
start_bidx = start_bidx_of_node(nofs, inode)
+ ofs_in_node;
if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode))
move_encrypted_block(inode, start_bidx);
move_encrypted_block(inode, start_bidx, segno, off);
else
move_data_page(inode, start_bidx, gc_type);
move_data_page(inode, start_bidx, gc_type, segno, off);
if (locked) {
up_write(&fi->dio_rwsem[WRITE]);