Messages in this thread Patch in this message | | | From | Jaegeuk Kim <> | Subject | [PATCH 3.15 2/2] f2fs: check bdi->dirty_exceeded when trying to skip data writes | Date | Mon, 14 Jul 2014 07:52:51 -0700 |
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commit dd6b9bf5883c3ca9c17bac80ccd8615fe5a452a3 upstream.
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> --- fs/f2fs/node.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index a9c0495..5696bde 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); } -- 2.0.1.472.g6f92e5f
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