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f2fs: fix to avoid potential deadlock

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Using f2fs_trylock_op() in f2fs_write_compressed_pages() to avoid potential
deadlock like we did in f2fs_write_single_data_page().

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2020-02-24 19:20:16 +08:00 committed by Jaegeuk Kim
parent 097a768650
commit df77fbd8c5
1 changed files with 3 additions and 3 deletions
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6
fs/f2fs/compress.c
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@ -775,7 +775,6 @@ static int f2fs_write_compressed_pages(struct compress_ctx *cc,
.encrypted_page = NULL,
.compressed_page = NULL,
.submitted = false,
.need_lock = LOCK_RETRY,
.io_type = io_type,
.io_wbc = wbc,
.encrypted = f2fs_encrypted_file(cc->inode),
@ -788,9 +787,10 @@ static int f2fs_write_compressed_pages(struct compress_ctx *cc,
loff_t psize;
int i, err;
set_new_dnode(&dn, cc->inode, NULL, NULL, 0);
if (!f2fs_trylock_op(sbi))
return -EAGAIN;
f2fs_lock_op(sbi);
set_new_dnode(&dn, cc->inode, NULL, NULL, 0);
err = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE);
if (err)