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vfs: Add IOP_XATTR inode operations flag

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The IOP_XATTR inode operations flag in inode->i_opflags indicates that
the inode has xattr support.  The flag is automatically set by
new_inode() on filesystems with xattr support (where sb->s_xattr is
defined), and cleared otherwise.  Filesystems can explicitly clear it
for inodes that should not have xattr support.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Andreas Gruenbacher
2016-09-29 17:48:39 +02:00
committed by Al Viro
parent b6ba11773d
commit d0a5b995a3
3 changed files with 11 additions and 4 deletions
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include/linux/fs.h
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@@ -591,6 +591,7 @@ is_uncached_acl(struct posix_acl *acl)
#define IOP_FASTPERM 0x0001
#define IOP_LOOKUP 0x0002
#define IOP_NOFOLLOW 0x0004
#define IOP_XATTR 0x0008
/*
* Keep mostly read-only and often accessed (especially for