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authorTrond Myklebust <Trond.Myklebust@netapp.com>2013-10-29 00:33:36 +0100
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-10-29 00:36:46 +0100
commitc698dbf9fecae54e5dc159cee76939228c533a25 (patch)
tree1b0231679ec4d86e6f88b233de825bd5b8e687ac /tools/perf/config
parentnfs: use IS_ROOT not DCACHE_DISCONNECTED (diff)
parentNFS: Use i_writecount to control whether to get an fscache cookie in nfs_open() (diff)
downloadlinux-c698dbf9fecae54e5dc159cee76939228c533a25.tar.xz
linux-c698dbf9fecae54e5dc159cee76939228c533a25.zip
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
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