From e2728c5621fd9c68c65a6647875a1d1c67b9f257 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Tue, 12 Jan 2021 11:02:47 -0800 Subject: 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 Reviewed-by: Jan Kara Signed-off-by: Eric Biggers Signed-off-by: Jan Kara --- fs/gfs2/super.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'fs/gfs2') diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 2f56acc41c04..042b94288ff1 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -562,8 +562,6 @@ static void gfs2_dirty_inode(struct inode *inode, int flags) int need_endtrans = 0; int ret; - if (!(flags & I_DIRTY_INODE)) - return; if (unlikely(gfs2_withdrawn(sdp))) return; if (!gfs2_glock_is_locked_by_me(ip->i_gl)) { -- cgit v1.2.3 From 3aac630b5ce18b0a7e34cb35cdd99fcc508edc92 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Tue, 12 Jan 2021 11:02:52 -0800 Subject: gfs2: don't worry about I_DIRTY_TIME in gfs2_fsync() The I_DIRTY_TIME flag is primary used within the VFS, and there's no reason for ->fsync() implementations to do anything with it. This is because when !datasync, the VFS will expire dirty timestamps before calling ->fsync(). (See vfs_fsync_range().) This turns I_DIRTY_TIME into I_DIRTY_SYNC. Therefore, change gfs2_fsync() to not check for I_DIRTY_TIME. Link: https://lore.kernel.org/r/20210112190253.64307-11-ebiggers@kernel.org Reviewed-by: Christoph Hellwig Reviewed-by: Jan Kara Signed-off-by: Eric Biggers Signed-off-by: Jan Kara --- fs/gfs2/file.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/gfs2') diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index b39b339feddc..7fe2497755a3 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -749,7 +749,7 @@ static int gfs2_fsync(struct file *file, loff_t start, loff_t end, { struct address_space *mapping = file->f_mapping; struct inode *inode = mapping->host; - int sync_state = inode->i_state & I_DIRTY_ALL; + int sync_state = inode->i_state & I_DIRTY; struct gfs2_inode *ip = GFS2_I(inode); int ret = 0, ret1 = 0; @@ -762,7 +762,7 @@ static int gfs2_fsync(struct file *file, loff_t start, loff_t end, if (!gfs2_is_jdata(ip)) sync_state &= ~I_DIRTY_PAGES; if (datasync) - sync_state &= ~(I_DIRTY_SYNC | I_DIRTY_TIME); + sync_state &= ~I_DIRTY_SYNC; if (sync_state) { ret = sync_inode_metadata(inode, 1); -- cgit v1.2.3