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NFS: Reduce stack footprint of nfs_readdir()

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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2010-04-16 16:22:49 -04:00
parent 011fff7239
commit aa49b4cf7d
2 changed files with 18 additions and 12 deletions
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17
fs/nfs/dir.c
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@@ -530,9 +530,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
nfs_readdir_descriptor_t my_desc,
*desc = &my_desc;
struct nfs_entry my_entry;
struct nfs_fh fh;
struct nfs_fattr fattr;
long res;
int res = -ENOMEM;
dfprintk(FILE, "NFS: readdir(%s/%s) starting at cookie %llu\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
@@ -554,9 +552,11 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
my_entry.cookie = my_entry.prev_cookie = 0;
my_entry.eof = 0;
my_entry.fh = &fh;
my_entry.fattr = &fattr;
nfs_fattr_init(&fattr);
my_entry.fh = nfs_alloc_fhandle();
my_entry.fattr = nfs_alloc_fattr();
if (my_entry.fh == NULL || my_entry.fattr == NULL)
goto out_alloc_failed;
desc->entry = &my_entry;
nfs_block_sillyrename(dentry);
@@ -598,7 +598,10 @@ out:
nfs_unblock_sillyrename(dentry);
if (res > 0)
res = 0;
dfprintk(FILE, "NFS: readdir(%s/%s) returns %ld\n",
out_alloc_failed:
nfs_free_fattr(my_entry.fattr);
nfs_free_fhandle(my_entry.fh);
dfprintk(FILE, "NFS: readdir(%s/%s) returns %d\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
res);
return res;