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| author | Christoph Hellwig <hch@infradead.org> | 2008-12-17 18:27:36 +0100 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2008-12-22 08:02:01 +0100 |
| commit | efc557570dc99b46e46a7be51c3c7402b485e829 (patch) | |
| tree | faba8c63e6bcf798ab76f7da1fcb035ece445700 /fs/xfs/xfs_error.c | |
| parent | [XFS] Fix speculative allocation beyond eof (diff) | |
| download | linux-efc557570dc99b46e46a7be51c3c7402b485e829.tar.xz linux-efc557570dc99b46e46a7be51c3c7402b485e829.zip | |
[XFS] avoid memory allocations in xfs_fs_vcmn_err
xfs_fs_vcmn_err can be called under a spinlock, but does a sleeping memory
allocation to create buffer for it's internal sprintf. Fortunately it's
the only caller of icmn_err, so we can merge the two and have one single
static buffer and spinlock protecting it. While we're at it make sure
we proper __attribute__ format annotations so that the compiler can detect
mismatched format strings.
Reported-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_error.c')
| -rw-r--r-- | fs/xfs/xfs_error.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c index f227ecd1a294..92d5cd5bf4f2 100644 --- a/fs/xfs/xfs_error.c +++ b/fs/xfs/xfs_error.c @@ -153,21 +153,6 @@ xfs_errortag_clearall(xfs_mount_t *mp, int loud) } #endif /* DEBUG */ -static void -xfs_fs_vcmn_err(int level, xfs_mount_t *mp, char *fmt, va_list ap) -{ - if (mp != NULL) { - char *newfmt; - int len = 16 + mp->m_fsname_len + strlen(fmt); - - newfmt = kmem_alloc(len, KM_SLEEP); - sprintf(newfmt, "Filesystem \"%s\": %s", mp->m_fsname, fmt); - icmn_err(level, newfmt, ap); - kmem_free(newfmt); - } else { - icmn_err(level, fmt, ap); - } -} void xfs_fs_cmn_err(int level, xfs_mount_t *mp, char *fmt, ...) |