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authorJaegeuk Kim <jaegeuk@kernel.org>2017-05-12 13:51:34 -0700
committerJaegeuk Kim <jaegeuk@kernel.org>2017-05-23 21:07:15 -0700
commitcc15620bc826b14006956fd321e026ae96aff53a (patch)
tree1bb4cbe573d4eadbee4fb62ae9514b0499570a29 /fs/f2fs/gc.c
parenta912b54d3aaa011266dc266e3694f782f27233cf (diff)
f2fs: avoid f2fs_lock_op for IPU writes
Currently, if we do get_node_of_data before f2fs_lock_op, there may be dead lock as follows, where process A would be in infinite loop, and B will NOT be awaked. Process A(cp): Process B: f2fs_lock_all(sbi) get_dnode_of_data <---- lock dn.node_page flush_nodes f2fs_lock_op So, this patch adds f2fs_trylock_op to avoid f2fs_lock_op done by IPU. Signed-off-by: Hou Pengyang <houpengyang@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/gc.c')
-rw-r--r--fs/f2fs/gc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index e2b13558a915..14c71ac76062 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -719,7 +719,7 @@ static void move_data_page(struct inode *inode, block_t bidx, int gc_type,
.old_blkaddr = NULL_ADDR,
.page = page,
.encrypted_page = NULL,
- .need_lock = true,
+ .need_lock = LOCK_REQ,
};
bool is_dirty = PageDirty(page);
int err;