diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2009-08-16 23:05:08 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-09-24 13:47:42 +0200 |
| commit | 6d729e44a55547c009d7a87ea66bff21a8e0afea (patch) | |
| tree | c27e69babb9b397ad56cb20a935b75c35ceb364f /fs/jfs | |
| parent | freeze_bdev: grab active reference to frozen superblocks (diff) | |
| download | linux-6d729e44a55547c009d7a87ea66bff21a8e0afea.tar.xz linux-6d729e44a55547c009d7a87ea66bff21a8e0afea.zip | |
fs: Make unload_nls() NULL pointer safe
Most call sites of unload_nls() do:
if (nls)
unload_nls(nls);
Check the pointer inside unload_nls() like we do in kfree() and
simplify the call sites.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Steve French <sfrench@us.ibm.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Cc: Petr Vandrovec <vandrove@vc.cvut.cz>
Cc: Anton Altaparmakov <aia21@cantab.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/jfs')
| -rw-r--r-- | fs/jfs/super.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 37e6dcda8fc8..2234c73fc577 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -178,13 +178,11 @@ static void jfs_put_super(struct super_block *sb) rc = jfs_umount(sb); if (rc) jfs_err("jfs_umount failed with return code %d", rc); - if (sbi->nls_tab) - unload_nls(sbi->nls_tab); - sbi->nls_tab = NULL; + + unload_nls(sbi->nls_tab); truncate_inode_pages(sbi->direct_inode->i_mapping, 0); iput(sbi->direct_inode); - sbi->direct_inode = NULL; kfree(sbi); @@ -347,8 +345,7 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize, if (nls_map != (void *) -1) { /* Discard old (if remount) */ - if (sbi->nls_tab) - unload_nls(sbi->nls_tab); + unload_nls(sbi->nls_tab); sbi->nls_tab = nls_map; } return 1; |