JBD currently allocates commit and frozen buffers from slabs. With CONFIG_SLAB_DEBUG, its possible for an allocation to cross the page boundary causing IO problems. https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=200127 So, instead of allocating these from regular slabs - manage allocation from its own slabs and disable slab debug for these slabs. [akpm@osdl.org: cleanups] Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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| @@ -72,6 +72,9 @@ extern int journal_enable_debug; · 71 unmodified lines | |||
| 72 | #endif | 72 | #endif |
| 73 | 73 | ||
| 74 | extern void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry); | 74 | extern void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry); |
| 75 | extern void * jbd_slab_alloc(size_t size, gfp_t flags); | ||
| 76 | extern void jbd_slab_free(void *ptr, size_t size); | ||
| 77 | |||
| 75 | #define jbd_kmalloc(size, flags) \ | 78 | #define jbd_kmalloc(size, flags) \ |
| 76 | __jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry) | 79 | __jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry) |
| 77 | #define jbd_rep_kmalloc(size, flags) \ | 80 | #define jbd_rep_kmalloc(size, flags) \ |