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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-10-28 23:33:36 (GMT) |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-10-28 23:36:46 (GMT) |
| commit | c698dbf9fecae54e5dc159cee76939228c533a25 (patch) | |
| tree | 1b0231679ec4d86e6f88b233de825bd5b8e687ac /fs/afs | |
| parent | a3f432bfd06a4ec3b812e32d3266e0d1ad75d008 (diff) | |
| parent | f1fe29b4a02d0805aa7d0ff6b73410a9f9316d69 (diff) | |
| download | linux-fsl-qoriq-c698dbf9fecae54e5dc159cee76939228c533a25.tar.xz | |
Merge branch 'fscache' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs into linux-next
Pull fs-cache fixes from David Howells:
Can you pull these commits to fix an issue with NFS whereby caching can be
enabled on a file that is open for writing by subsequently opening it for
reading. This can be made to crash by opening it for writing again if you're
quick enough.
The gist of the patchset is that the cookie should be acquired at inode
creation only and subsequently enabled and disabled as appropriate (which
dispenses with the backing objects when they're not needed).
The extra synchronisation that NFS does can then be dispensed with as it is
thenceforth managed by FS-Cache.
Could you send these on to Linus?
This likely will need fixing also in CIFS and 9P also once the FS-Cache
changes are upstream. AFS and Ceph are probably safe.
* 'fscache' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
NFS: Use i_writecount to control whether to get an fscache cookie in nfs_open()
FS-Cache: Provide the ability to enable/disable cookies
FS-Cache: Add use/unuse/wake cookie wrappers
Diffstat (limited to 'fs/afs')
| -rw-r--r-- | fs/afs/cell.c | 2 | ||||
| -rw-r--r-- | fs/afs/inode.c | 2 | ||||
| -rw-r--r-- | fs/afs/vlocation.c | 3 | ||||
| -rw-r--r-- | fs/afs/volume.c | 2 |
4 files changed, 5 insertions, 4 deletions
diff --git a/fs/afs/cell.c b/fs/afs/cell.c index 3c090b7..ca0a3cf 100644 --- a/fs/afs/cell.c +++ b/fs/afs/cell.c @@ -179,7 +179,7 @@ struct afs_cell *afs_cell_create(const char *name, unsigned namesz, /* put it up for caching (this never returns an error) */ cell->cache = fscache_acquire_cookie(afs_cache_netfs.primary_index, &afs_cell_cache_index_def, - cell); + cell, true); #endif /* add to the cell lists */ diff --git a/fs/afs/inode.c b/fs/afs/inode.c index 789bc25..ce25d75 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -259,7 +259,7 @@ struct inode *afs_iget(struct super_block *sb, struct key *key, #ifdef CONFIG_AFS_FSCACHE vnode->cache = fscache_acquire_cookie(vnode->volume->cache, &afs_vnode_cache_index_def, - vnode); + vnode, true); #endif ret = afs_inode_map_status(vnode, key); diff --git a/fs/afs/vlocation.c b/fs/afs/vlocation.c index 57bcb15..b6df2e8 100644 --- a/fs/afs/vlocation.c +++ b/fs/afs/vlocation.c @@ -308,7 +308,8 @@ static int afs_vlocation_fill_in_record(struct afs_vlocation *vl, /* see if we have an in-cache copy (will set vl->valid if there is) */ #ifdef CONFIG_AFS_FSCACHE vl->cache = fscache_acquire_cookie(vl->cell->cache, - &afs_vlocation_cache_index_def, vl); + &afs_vlocation_cache_index_def, vl, + true); #endif if (vl->valid) { diff --git a/fs/afs/volume.c b/fs/afs/volume.c index 401eeb2..2b60725 100644 --- a/fs/afs/volume.c +++ b/fs/afs/volume.c @@ -131,7 +131,7 @@ struct afs_volume *afs_volume_lookup(struct afs_mount_params *params) #ifdef CONFIG_AFS_FSCACHE volume->cache = fscache_acquire_cookie(vlocation->cache, &afs_volume_cache_index_def, - volume); + volume, true); #endif afs_get_vlocation(vlocation); volume->vlocation = vlocation; |