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statx: don't clear STATX_ATIME on SB_RDONLY 

IS_NOATIME(inode) is defined as __IS_FLG(inode, SB_RDONLY|SB_NOATIME), so
generic_fillattr() will clear STATX_ATIME from the result_mask if the super
block is marked read only.

This was probably not the intention, so fix to only clear STATX_ATIME if
the fs doesn't support atime at all.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Miklos Szeredi 2020-05-14 16:44:24 +02:00
parent 581701b7ef
commit 761e28fa27
1 changed files with 2 additions and 1 deletions
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3
fs/stat.c
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@ -73,7 +73,8 @@ int vfs_getattr_nosec(const struct path *path, struct kstat *stat,
query_flags &= KSTAT_QUERY_FLAGS;
/* allow the fs to override these if it really wants to */
if (IS_NOATIME(inode))
/* SB_NOATIME means filesystem supplies dummy atime value */
if (inode->i_sb->s_flags & SB_NOATIME)
stat->result_mask &= ~STATX_ATIME;
if (IS_AUTOMOUNT(inode))
stat->attributes |= STATX_ATTR_AUTOMOUNT;