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[PATCH] NFS: Fix races in nfs_revalidate_mapping()

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Prevent the call to invalidate_inode_pages2() from racing with file writes
by taking the inode->i_mutex across the page cache flush and invalidate.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Trond Myklebust
2007-01-24 11:54:55 -08:00
committed by Linus Torvalds
parent bde8f00ce6
commit 717d44e849
4 changed files with 72 additions and 32 deletions
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2
fs/nfs/dir.c
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@ -532,7 +532,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
lock_kernel();
res = nfs_revalidate_mapping(inode, filp->f_mapping);
res = nfs_revalidate_mapping_nolock(inode, filp->f_mapping);
if (res < 0) {
unlock_kernel();
return res;