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| author | Eric Biggers <ebiggers@google.com> | 2021-01-12 11:02:47 -0800 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2021-01-13 17:26:33 +0100 |
| commit | e2728c5621fd9c68c65a6647875a1d1c67b9f257 (patch) | |
| tree | 22924de355cb209301133ffa057e6c8302b5b266 /fs/fs-writeback.c | |
| parent | ff4136e64d129c4b617331d6c84a3e1781dda70d (diff) | |
| download | lwn-e2728c5621fd9c68c65a6647875a1d1c67b9f257.tar.gz lwn-e2728c5621fd9c68c65a6647875a1d1c67b9f257.zip | |
fs: don't call ->dirty_inode for lazytime timestamp updates
There is no need to call ->dirty_inode for lazytime timestamp updates
(i.e. for __mark_inode_dirty(I_DIRTY_TIME)), since by the definition of
lazytime, filesystems must ignore these updates. Filesystems only need
to care about the updated timestamps when they expire.
Therefore, only call ->dirty_inode when I_DIRTY_INODE is set.
Based on a patch from Christoph Hellwig:
https://lore.kernel.org/r/20200325122825.1086872-4-hch@lst.de
Link: https://lore.kernel.org/r/20210112190253.64307-6-ebiggers@kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/fs-writeback.c')
| -rw-r--r-- | fs/fs-writeback.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index c41cb887eb7d..b7616bbd5533 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -2255,16 +2255,16 @@ void __mark_inode_dirty(struct inode *inode, int flags) * Don't do this for I_DIRTY_PAGES - that doesn't actually * dirty the inode itself */ - if (flags & (I_DIRTY_INODE | I_DIRTY_TIME)) { + if (flags & I_DIRTY_INODE) { trace_writeback_dirty_inode_start(inode, flags); if (sb->s_op->dirty_inode) sb->s_op->dirty_inode(inode, flags); trace_writeback_dirty_inode(inode, flags); - } - if (flags & I_DIRTY_INODE) + flags &= ~I_DIRTY_TIME; + } dirtytime = flags & I_DIRTY_TIME; /* |