From df77fbd8c5b222c680444801ffd20e8bbc90a56e Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Mon, 24 Feb 2020 19:20:16 +0800 Subject: f2fs: fix to avoid potential deadlock 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 Signed-off-by: Jaegeuk Kim --- fs/f2fs/compress.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'fs/f2fs/compress.c') diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c index 5ca2ea0e1e45..6da33ba2b2db 100644 --- a/fs/f2fs/compress.c +++ b/fs/f2fs/compress.c @@ -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) -- cgit v1.2.3