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[PATCH] nfs: nfs_getattr() can't call nfs_sync_mapping_range() for non-regular files
Looks like we need a check in nfs_getattr() for a regular file. It makes no sense to call nfs_sync_mapping_range() on anything else. I think that should fix your problem: it will stop the NFS client from interfering with dirty pages on that inode's mapping. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Acked-by: Olof Johansson <olof@lixom.net> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -429,7 +429,8 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
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int err;
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/* Flush out writes to the server in order to update c/mtime */
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nfs_sync_mapping_range(inode->i_mapping, 0, 0, FLUSH_NOCOMMIT);
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if (S_ISREG(inode->i_mode))
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nfs_sync_mapping_range(inode->i_mapping, 0, 0, FLUSH_NOCOMMIT);
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/*
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* We may force a getattr if the user cares about atime.
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