diff options
| author | Nathan Scott <nathans@sgi.com> | 2006-09-28 11:03:05 +1000 |
|---|---|---|
| committer | Tim Shimmin <tes@sgi.com> | 2006-09-28 11:03:05 +1000 |
| commit | efb8ad7e9431a430a75d44288614cf6047ff4baa (patch) | |
| tree | cbebf7d8bf1b5f25235756c0aa7ff610d4cb4055 /fs/xfs/linux-2.6 | |
| parent | 3f89243c5b987dd55f8eec6fd54be05887d69bc6 (diff) | |
[XFS] Add a debug flag for allocations which are known to be larger than
one page.
SGI-PV: 955302
SGI-Modid: xfs-linux-melb:xfs-kern:26800a
Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Diffstat (limited to 'fs/xfs/linux-2.6')
| -rw-r--r-- | fs/xfs/linux-2.6/kmem.c | 8 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/kmem.h | 3 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_buf.c | 2 |
3 files changed, 11 insertions, 2 deletions
diff --git a/fs/xfs/linux-2.6/kmem.c b/fs/xfs/linux-2.6/kmem.c index aba7fcf881a..f77fe5c8fcc 100644 --- a/fs/xfs/linux-2.6/kmem.c +++ b/fs/xfs/linux-2.6/kmem.c @@ -34,6 +34,14 @@ kmem_alloc(size_t size, unsigned int __nocast flags) gfp_t lflags = kmem_flags_convert(flags); void *ptr; +#ifdef DEBUG + if (unlikely(!(flags & KM_LARGE) && (size > PAGE_SIZE))) { + printk(KERN_WARNING "Large %s attempt, size=%ld\n", + __FUNCTION__, (long)size); + dump_stack(); + } +#endif + do { if (size < MAX_SLAB_SIZE || retries > MAX_VMALLOCS) ptr = kmalloc(size, lflags); diff --git a/fs/xfs/linux-2.6/kmem.h b/fs/xfs/linux-2.6/kmem.h index 0e8293c5a32..6d24274fb3c 100644 --- a/fs/xfs/linux-2.6/kmem.h +++ b/fs/xfs/linux-2.6/kmem.h @@ -30,6 +30,7 @@ #define KM_NOSLEEP 0x0002u #define KM_NOFS 0x0004u #define KM_MAYFAIL 0x0008u +#define KM_LARGE 0x0010u /* * We use a special process flag to avoid recursive callbacks into @@ -41,7 +42,7 @@ kmem_flags_convert(unsigned int __nocast flags) { gfp_t lflags; - BUG_ON(flags & ~(KM_SLEEP|KM_NOSLEEP|KM_NOFS|KM_MAYFAIL)); + BUG_ON(flags & ~(KM_SLEEP|KM_NOSLEEP|KM_NOFS|KM_MAYFAIL|KM_LARGE)); if (flags & KM_NOSLEEP) { lflags = GFP_ATOMIC | __GFP_NOWARN; diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 247adced6e1..58b6599de61 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -768,7 +768,7 @@ xfs_buf_get_noaddr( _xfs_buf_initialize(bp, target, 0, len, 0); try_again: - data = kmem_alloc(malloc_len, KM_SLEEP | KM_MAYFAIL); + data = kmem_alloc(malloc_len, KM_SLEEP | KM_MAYFAIL | KM_LARGE); if (unlikely(data == NULL)) goto fail_free_buf; |