diff options
| author | Dave Chinner <dchinner@redhat.com> | 2016-02-09 08:54:58 +0300 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2016-02-09 08:54:58 +0300 |
| commit | 50997470ef95fd8ae0ef6acab3b2e1d886ae2445 (patch) | |
| tree | cf2906206f50c18fb77eb3f24ed8e885c63f4114 /fs/xfs/xfs_icache.c | |
| parent | faeb4e4715be017e88e630bda84477afc1dff38b (diff) | |
| download | linux-50997470ef95fd8ae0ef6acab3b2e1d886ae2445.tar.xz | |
xfs: reinitialise recycled VFS inode correctly
We are going to keep certain on-disk information in the VFS inode
rather than in a separate XFS specific stucture, so we have to be
careful of the VFS code clearing that information when we
re-initialise reclaimable cached inodes during lookup. If we don't
do this, then we lose critical information from the inode and that
results in corruption being detected.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_icache.c')
| -rw-r--r-- | fs/xfs/xfs_icache.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index 7c26f8611891..9ca2865575ab 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -135,6 +135,26 @@ xfs_inode_free( } /* + * When we recycle a reclaimable inode, we need to re-initialise the VFS inode + * part of the structure. This is made more complex by the fact we store + * information about the on-disk values in the VFS inode and so we can't just + * overwrite it's values unconditionally. Hence we save the parameters we + * need to retain across reinitialisation, and rewrite them into the VFS inode + * after resetting it's state even if resetting fails. + */ +static int +xfs_reinit_inode( + struct xfs_mount *mp, + struct inode *inode) +{ + int error; + + error = inode_init_always(mp->m_super, inode); + + return error; +} + +/* * Check the validity of the inode we just found it the cache */ static int @@ -208,7 +228,7 @@ xfs_iget_cache_hit( spin_unlock(&ip->i_flags_lock); rcu_read_unlock(); - error = inode_init_always(mp->m_super, inode); + error = xfs_reinit_inode(mp, inode); if (error) { /* * Re-initializing the inode failed, and we are in deep |