From: Miklos Szeredi <mszeredi@redhat.com>
To: linux-unionfs@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
Al Viro <viro@zeniv.linux.org.uk>
Subject: [PATCH v2 28/35] Revert "ovl: fix relatime for directories"
Date: Mon, 7 May 2018 10:38:00 +0200 [thread overview]
Message-ID: <20180507083807.28792-29-mszeredi@redhat.com> (raw)
In-Reply-To: <20180507083807.28792-1-mszeredi@redhat.com>
This reverts commit cd91304e7190b4c4802f8e413ab2214b233e0260.
Overlayfs no longer relies on the vfs correct atime handling.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
---
fs/inode.c | 21 ++++-----------------
fs/overlayfs/super.c | 3 ---
include/linux/dcache.h | 3 ---
3 files changed, 4 insertions(+), 23 deletions(-)
diff --git a/fs/inode.c b/fs/inode.c
index 13ceb98c3bd3..e97d0193221d 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1573,24 +1573,11 @@ EXPORT_SYMBOL(bmap);
static void update_ovl_inode_times(struct dentry *dentry, struct inode *inode,
bool rcu)
{
- struct dentry *upperdentry;
+ if (!rcu) {
+ struct inode *realinode = d_real_inode(dentry);
- /*
- * Nothing to do if in rcu or if non-overlayfs
- */
- if (rcu || likely(!(dentry->d_flags & DCACHE_OP_REAL)))
- return;
-
- upperdentry = d_real(dentry, NULL, 0, D_REAL_UPPER);
-
- /*
- * If file is on lower then we can't update atime, so no worries about
- * stale mtime/ctime.
- */
- if (upperdentry) {
- struct inode *realinode = d_inode(upperdentry);
-
- if ((!timespec_equal(&inode->i_mtime, &realinode->i_mtime) ||
+ if (unlikely(inode != realinode) &&
+ (!timespec_equal(&inode->i_mtime, &realinode->i_mtime) ||
!timespec_equal(&inode->i_ctime, &realinode->i_ctime))) {
inode->i_mtime = realinode->i_mtime;
inode->i_ctime = realinode->i_ctime;
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index c3d8c7ea180f..006dc70d7425 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -107,9 +107,6 @@ static struct dentry *ovl_d_real(struct dentry *dentry,
if (inode && d_inode(dentry) == inode)
return dentry;
- if (flags & D_REAL_UPPER)
- return ovl_dentry_upper(dentry);
-
if (!d_is_reg(dentry)) {
if (!inode || inode == d_inode(dentry))
return dentry;
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 94acbde17bb1..b2b829bcb7c0 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -563,9 +563,6 @@ static inline struct dentry *d_backing_dentry(struct dentry *upper)
return upper;
}
-/* d_real() flags */
-#define D_REAL_UPPER 0x2 /* return upper dentry or NULL if non-upper */
-
/**
* d_real - Return the real dentry
* @dentry: the dentry to query
--
2.14.3
next prev parent reply other threads:[~2018-05-07 8:39 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-07 8:37 [PATCH v2 00/35] overlayfs: stack file operations Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 01/35] vfs: add path_open() Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 02/35] vfs: optionally don't account file in nr_files Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 03/35] vfs: add f_op->pre_mmap() Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 04/35] vfs: export vfs_ioctl() to modules Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 05/35] vfs: export vfs_dedupe_file_range_one() " Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 06/35] ovl: copy up times Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 07/35] ovl: copy up inode flags Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 08/35] Revert "Revert "ovl: get_write_access() in truncate"" Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 09/35] ovl: copy up file size as well Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 10/35] ovl: deal with overlay files in ovl_d_real() Miklos Szeredi
2018-05-07 13:17 ` Vivek Goyal
2018-05-07 8:37 ` [PATCH v2 11/35] ovl: stack file ops Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 12/35] ovl: add helper to return real file Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 13/35] ovl: add ovl_read_iter() Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 14/35] ovl: add ovl_write_iter() Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 15/35] ovl: add ovl_fsync() Miklos Szeredi
2018-05-08 5:14 ` Amir Goldstein
2018-05-08 14:57 ` Miklos Szeredi
2018-05-08 15:02 ` Amir Goldstein
2018-05-07 8:37 ` [PATCH v2 16/35] ovl: add ovl_mmap() Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 17/35] ovl: add ovl_fallocate() Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 18/35] ovl: add lsattr/chattr support Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 19/35] ovl: add ovl_fiemap() Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 20/35] ovl: add O_DIRECT support Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 21/35] ovl: add reflink/copyfile/dedup support Miklos Szeredi
2018-05-07 20:43 ` Darrick J. Wong
2018-05-08 14:13 ` Miklos Szeredi
2018-05-08 14:38 ` Darrick J. Wong
2018-05-07 8:37 ` [PATCH v2 22/35] vfs: don't open real Miklos Szeredi
2018-05-07 10:27 ` Amir Goldstein
2018-05-07 10:29 ` Miklos Szeredi
2018-05-11 18:54 ` Vivek Goyal
2018-05-11 19:42 ` Vivek Goyal
2018-05-14 13:58 ` Vivek Goyal
2018-05-15 20:42 ` Vivek Goyal
2018-05-14 14:03 ` Daniel Walsh
2018-05-07 8:37 ` [PATCH v2 23/35] ovl: copy-up on MAP_SHARED Miklos Szeredi
2018-05-07 19:28 ` Randy Dunlap
2018-05-08 15:03 ` Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 24/35] vfs: simplify dentry_open() Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 25/35] Revert "ovl: fix may_write_real() for overlayfs directories" Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 26/35] Revert "ovl: don't allow writing ioctl on lower layer" Miklos Szeredi
2018-05-07 8:37 ` [PATCH v2 27/35] vfs: fix freeze protection in mnt_want_write_file() for overlayfs Miklos Szeredi
2018-05-07 8:38 ` Miklos Szeredi [this message]
2018-05-07 8:38 ` [PATCH v2 29/35] Revert "vfs: update ovl inode before relatime check" Miklos Szeredi
2018-05-07 8:38 ` [PATCH v2 30/35] Revert "vfs: add flags to d_real()" Miklos Szeredi
2018-05-07 8:38 ` [PATCH v2 31/35] Revert "vfs: do get_write_access() on upper layer of overlayfs" Miklos Szeredi
2018-05-07 8:38 ` [PATCH v2 32/35] Partially revert "locks: fix file locking on overlayfs" Miklos Szeredi
2018-05-08 15:15 ` Jeff Layton
2018-05-07 8:38 ` [PATCH v2 33/35] Revert "fsnotify: support overlayfs" Miklos Szeredi
2018-05-07 8:38 ` [PATCH v2 34/35] vfs: remove open_flags from d_real() Miklos Szeredi
2018-05-07 8:38 ` [PATCH v2 35/35] ovl: fix documentation of non-standard behavior Miklos Szeredi
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