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| author | Amir Goldstein <amir73il@gmail.com> | 2018-01-26 22:24:40 +0300 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2018-01-29 18:27:23 +0300 |
| commit | acd1d71598f7654b6d7718bcbe979992295c672a (patch) | |
| tree | db35d8607f69ef0531ea53b05fa552cf671d1919 /fs | |
| parent | 751f3767c245f9adf4f0a4f8f04aae9ae1d675a0 (diff) | |
| download | linux-acd1d71598f7654b6d7718bcbe979992295c672a.tar.xz | |
xfs: preserve i_rdev when recycling a reclaimable inode
Commit 66f364649d870 ("xfs: remove if_rdev") moved storing of rdev
value for special inodes to VFS inodes, but forgot to preserve the
value of i_rdev when recycling a reclaimable xfs_inode.
This was detected by xfstest overlay/017 with inodex=on mount option
and xfs base fs. The test does a lookup of overlay chardev and blockdev
right after drop caches.
Overlayfs inodes hold a reference on underlying xfs inodes when mount
option index=on is configured. If drop caches reclaim xfs inodes, before
it relclaims overlayfs inodes, that can sometimes leave a reclaimable xfs
inode and that test hits that case quite often.
When that happens, the xfs inode cache remains broken (zere i_rdev)
until the next cycle mount or drop caches.
Fixes: 66f364649d870 ("xfs: remove if_rdev")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/xfs/xfs_icache.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index 2da7a2ee34bc..73bbeac739ed 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -295,6 +295,7 @@ xfs_reinit_inode( uint32_t generation = inode->i_generation; uint64_t version = inode->i_version; umode_t mode = inode->i_mode; + dev_t dev = inode->i_rdev; error = inode_init_always(mp->m_super, inode); @@ -302,6 +303,7 @@ xfs_reinit_inode( inode->i_generation = generation; inode->i_version = version; inode->i_mode = mode; + inode->i_rdev = dev; return error; } |