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| author |   Tim Murray <timmurray@google.com> | 2022-01-07 12:48:44 -0800 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2022-01-24 17:40:04 -0800 |
| commit | e4544b63a7ee49e7fbebf35ece0a6acd3b9617ae (patch) | |
| tree | b55709d5753a19b8beacfcab1fe12dc8128435d7 /fs/f2fs/inline.c | |
| parent | Merge tag 'powerpc-5.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux (diff) | |
| download | linux-dev-e4544b63a7ee49e7fbebf35ece0a6acd3b9617ae.tar.xz linux-dev-e4544b63a7ee49e7fbebf35ece0a6acd3b9617ae.zip | |
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/inline.c')
| -rw-r--r-- | fs/f2fs/inline.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index 4b5cefa3f90c..a578bf83b803 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -629,7 +629,7 @@ int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname, } if (inode) { - down_write(&F2FS_I(inode)->i_sem); + f2fs_down_write(&F2FS_I(inode)->i_sem); page = f2fs_init_inode_metadata(inode, dir, fname, ipage); if (IS_ERR(page)) { err = PTR_ERR(page); @@ -658,7 +658,7 @@ int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname, f2fs_update_parent_metadata(dir, inode, 0); fail: if (inode) - up_write(&F2FS_I(inode)->i_sem); + f2fs_up_write(&F2FS_I(inode)->i_sem); out: f2fs_put_page(ipage, 1); return err; |