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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-12-13 20:50:51 -0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-12-26 15:16:54 -0800 |
| commit | 76c7bfb3a89371aa87bda99c8ee2611ff5150434 (patch) | |
| tree | 5310982a9ad5cffc7fe84fea7f4cb1ad0885dcbc /fs/f2fs/segment.c | |
| parent | 72691af6dbd719349c559117652a70bfd4309ad2 (diff) | |
| download | linux-76c7bfb3a89371aa87bda99c8ee2611ff5150434.tar.gz linux-76c7bfb3a89371aa87bda99c8ee2611ff5150434.tar.bz2 linux-76c7bfb3a89371aa87bda99c8ee2611ff5150434.zip | |
f2fs: flush stale issued discard candidates
Sometimes, I could observe # of issuing_discard to be 1 which blocks background
jobs due to is_idle()=false.
The only way to get out of it was to trigger gc_urgent. This patch avoids that
by checking any candidates as done in the list.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.c')
| -rw-r--r-- | fs/f2fs/segment.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 0f7a92be678a..d9a3345a244a 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -1652,6 +1652,10 @@ static int issue_discard_thread(void *data) if (dcc->discard_wake) dcc->discard_wake = 0; + /* clean up pending candidates before going to sleep */ + if (atomic_read(&dcc->queued_discard)) + __wait_all_discard_cmd(sbi, NULL); + if (try_to_freeze()) continue; if (f2fs_readonly(sbi->sb)) |