diff options
| author | Tim Murray <timmurray@google.com> | 2022-01-07 23:48:44 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2022-01-25 04:40:04 +0300 |
| commit | e4544b63a7ee49e7fbebf35ece0a6acd3b9617ae (patch) | |
| tree | b55709d5753a19b8beacfcab1fe12dc8128435d7 /fs/f2fs/recovery.c | |
| parent | dd81e1c7d5fb126e5fbc5c9e334d7b3ec29a16a0 (diff) | |
| download | linux-e4544b63a7ee49e7fbebf35ece0a6acd3b9617ae.tar.xz | |
f2fs: move f2fs to use reader-unfair rwsems
f2fs rw_semaphores work better if writers can starve readers,
especially for the checkpoint thread, because writers are strictly
more important than reader threads. This prevents significant priority
inversion between low-priority readers that blocked while trying to
acquire the read lock and a second acquisition of the write lock that
might be blocking high priority work.
Signed-off-by: Tim Murray <timmurray@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/recovery.c')
| -rw-r--r-- | fs/f2fs/recovery.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c index 9683c80ff8c2..10d152cfa58d 100644 --- a/fs/f2fs/recovery.c +++ b/fs/f2fs/recovery.c @@ -796,7 +796,7 @@ int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only) INIT_LIST_HEAD(&dir_list); /* prevent checkpoint */ - down_write(&sbi->cp_global_sem); + f2fs_down_write(&sbi->cp_global_sem); /* step #1: find fsynced inode numbers */ err = find_fsync_dnodes(sbi, &inode_list, check_only); @@ -845,7 +845,7 @@ skip: if (!err) clear_sbi_flag(sbi, SBI_POR_DOING); - up_write(&sbi->cp_global_sem); + f2fs_up_write(&sbi->cp_global_sem); /* let's drop all the directory inodes for clean checkpoint */ destroy_fsync_dnodes(&dir_list, err); |