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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2014-06-28 01:00:41 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2014-07-09 05:59:45 -0700 |
| commit | 2743f865543c0c4a5e12fc13edb2bf89a6e9687c (patch) | |
| tree | 12189a35530e47904d52743ab5fb001a174c45b3 /fs | |
| parent | b2c0829912493df596706a1a036c67beb1bd6ff5 (diff) | |
| download | lwn-2743f865543c0c4a5e12fc13edb2bf89a6e9687c.tar.gz lwn-2743f865543c0c4a5e12fc13edb2bf89a6e9687c.zip | |
f2fs: check bdi->dirty_exceeded when trying to skip data writes
If we don't check the current backing device status, balance_dirty_pages can
fall into infinite pausing routine.
This can be occurred when a lot of directories make a small number of dirty
dentry pages including files.
Reported-by: Brian Chadwick <brianchad@westnet.com.au>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/node.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 9dfb9a042fd2..4b697ccc9b0c 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -42,6 +42,8 @@ bool available_free_memory(struct f2fs_sb_info *sbi, int type) mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 12; res = mem_size < ((val.totalram * nm_i->ram_thresh / 100) >> 2); } else if (type == DIRTY_DENTS) { + if (sbi->sb->s_bdi->dirty_exceeded) + return false; mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); res = mem_size < ((val.totalram * nm_i->ram_thresh / 100) >> 1); } |