tree 94e0cecd2b18cf2b126b702b30a8a982de3931e0
parent 24bd861d1c3fff5248de7ba3bdddb3369087ad46
author David Chinner <dgc@sgi.com> 1204771529 +1100
committer Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> 1208482785 +1000

[XFS] Update c/mtime correctly on truncates

XFS changes the c/mtime of an inode when truncating it to the same size.
The c/mtime is only supposed to change if the size is changed. Not to be
confused with ftruncate, where the c/mtime is supposed to be changed even
if the size is not changed.

The Linux VFS encodes this semantic difference in the flags it sends down
to ->setattr, which XFS currently ignores. We need to make XFS pay
attention to the VFS flags and hence Do The Right Thing.

SGI-PV: 977547
SGI-Modid: xfs-linux-melb:xfs-kern:30536a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>