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nfsd4: remember to put RW access on stateid destruction

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Without this, for example,

	open read
	open read+write
	close

will result in a struct file leak.

Regression from 7d94784293096c0a46897acdb83be5abd9278ece "nfsd4: fix
downgrade/lock logic".

Cc: stable@kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2011-06-27 16:57:12 -04:00
parent 1745680454
commit 499f3edc23
1 changed files with 6 additions and 11 deletions
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17
fs/nfsd/nfs4state.c
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@ -385,14 +385,6 @@ static int nfs4_access_to_omode(u32 access)
BUG();
}
static int nfs4_access_bmap_to_omode(struct nfs4_stateid *stp)
{
unsigned int access;
set_access(&access, stp->st_access_bmap);
return nfs4_access_to_omode(access);
}
static void unhash_generic_stateid(struct nfs4_stateid *stp)
{
list_del(&stp->st_hash);
@ -402,11 +394,14 @@ static void unhash_generic_stateid(struct nfs4_stateid *stp)
static void free_generic_stateid(struct nfs4_stateid *stp)
{
int oflag;
int i;
if (stp->st_access_bmap) {
oflag = nfs4_access_bmap_to_omode(stp);
nfs4_file_put_access(stp->st_file, oflag);
for (i = 1; i < 4; i++) {
if (test_bit(i, &stp->st_access_bmap))
nfs4_file_put_access(stp->st_file,
nfs4_access_to_omode(i));
}
}
put_nfs4_file(stp->st_file);
kmem_cache_free(stateid_slab, stp);