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(parent: ef7d1b2) | patch
NFS: Fix a potential deadlock in nfs_release_page
authorNikita Danilov <nikita@clusterfs.com>
Wed, 9 Aug 2006 17:53:47 +0000 (13:53 -0400)
committerTrond Myklebust <Trond.Myklebust@netapp.com>
Thu, 24 Aug 2006 19:48:46 +0000 (15:48 -0400)
commitddeff520f02b92128132c282c350fa72afffb84a
tree238a720ece47a2f1e07b4d4cc53dff10860bbacbtree | snapshot
parentef7d1b244fa6c94fb76d5f787b8629df64ea4046commit | diff
NFS: Fix a potential deadlock in nfs_release_page

nfs_wb_page() waits on request completion and, as a result, is not safe to be
called from nfs_release_page() invoked by VM scanner as part of GFP_NOFS
allocation. Fix possible deadlock by analyzing gfp mask and refusing to
release page if __GFP_FS is not set.

Signed-off-by: Nikita Danilov <danilov@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from 374d969debfb290bafcb41d28918dc6f7e43ce31 commit)
fs/nfs/file.c diff | blob | history
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