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NFS: Fix a preemption count leak in nfs_update_request

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The commit 2785259631 (nfs: use GFP_NOFS
preloads for radix-tree insertion) appears to have introduced a bug:
We only want to call radix_tree_preload() once after creating a request.
Calling it every time we loop after we created the request, will cause
preemption count leaks.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Nick Piggin <npiggin@suse.de>
This commit is contained in:
Trond Myklebust 2008-06-05 15:17:39 -04:00
parent 0b4aae7aad
commit f3d47a3a6a
1 changed files with 4 additions and 7 deletions
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11
fs/nfs/write.c
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@ -584,13 +584,6 @@ static struct nfs_page * nfs_update_request(struct nfs_open_context* ctx,
/* Loop over all inode entries and see if we find
* A request for the page we wish to update
*/
if (new) {
if (radix_tree_preload(GFP_NOFS)) {
nfs_release_request(new);
return ERR_PTR(-ENOMEM);
}
}
spin_lock(&inode->i_lock);
req = nfs_page_find_request_locked(page);
if (req) {
@ -630,6 +623,10 @@ static struct nfs_page * nfs_update_request(struct nfs_open_context* ctx,
new = nfs_create_request(ctx, inode, page, offset, bytes);
if (IS_ERR(new))
return new;
if (radix_tree_preload(GFP_NOFS)) {
nfs_release_request(new);
return ERR_PTR(-ENOMEM);
}
}
/* We have a request for our page.