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| author | Jeff Layton <jlayton@kernel.org> | 2022-09-09 16:00:31 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-04 00:03:06 +0300 |
| commit | 36f05cab0a2c97bda288c3b6a557ec5fb8d9bba6 (patch) | |
| tree | 5822bc43904c43dbce00d7dfe1aab83dd02e6633 /tools/testing | |
| parent | 5934ec1362b235c4341807c28f79b6a596ce1b40 (diff) | |
| download | linux-36f05cab0a2c97bda288c3b6a557ec5fb8d9bba6.tar.xz | |
tmpfs: add support for an i_version counter
NFSv4 mandates a change attribute to avoid problems with timestamp
granularity, which Linux implements using the i_version counter. This is
particularly important when the underlying filesystem is fast.
Give tmpfs an i_version counter. Since it doesn't have to be persistent,
we can just turn on SB_I_VERSION and sprinkle some inode_inc_iversion
calls in the right places.
Also, while there is no formal spec for xattrs, most implementations
update the ctime on setxattr. Fix shmem_xattr_handler_set to update the
ctime and bump the i_version appropriately.
Link: https://lkml.kernel.org/r/20220909130031.15477-1-jlayton@kernel.org
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/testing')
0 files changed, 0 insertions, 0 deletions