The patch titled Subject: put_bh() debug has been removed from the -mm tree. Its filename was put_bh-debug.patch This patch was dropped because other changes were merged, which wrecked this patch ------------------------------------------------------ From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Subject: put_bh() debug Detect bh refcount underflows. Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/buffer.c | 8 ++++++++ include/linux/buffer_head.h | 6 +----- 2 files changed, 9 insertions(+), 5 deletions(-) diff -puN fs/buffer.c~put_bh-debug fs/buffer.c --- a/fs/buffer.c~put_bh-debug +++ a/fs/buffer.c @@ -47,6 +47,14 @@ static int fsync_buffers_list(spinlock_t #define BH_ENTRY(list) list_entry((list), struct buffer_head, b_assoc_buffers) +void put_bh(struct buffer_head *bh) +{ + WARN_ON(atomic_read(&bh->b_count) <= 0); + smp_mb__before_atomic_dec(); + atomic_dec(&bh->b_count); +} +EXPORT_SYMBOL(put_bh); + void init_buffer(struct buffer_head *bh, bh_end_io_t *handler, void *private) { bh->b_end_io = handler; diff -puN include/linux/buffer_head.h~put_bh-debug include/linux/buffer_head.h --- a/include/linux/buffer_head.h~put_bh-debug +++ a/include/linux/buffer_head.h @@ -274,11 +274,7 @@ static inline void get_bh(struct buffer_ atomic_inc(&bh->b_count); } -static inline void put_bh(struct buffer_head *bh) -{ - smp_mb__before_atomic(); - atomic_dec(&bh->b_count); -} +void put_bh(struct buffer_head *bh); static inline void brelse(struct buffer_head *bh) { _ Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are origin.patch i-need-old-gcc.patch arch-alpha-kernel-systblss-remove-debug-check.patch maintainers-akpm-maintenance.patch mm-slab_commonc-suppress-warning.patch mem-hotplug-fix-boot-failed-in-case-all-the-nodes-are-hotpluggable-checkpatch-fixes.patch kernel-posix-timersc-code-clean-up-checkpatch-fixes.patch input-route-kbd-leds-through-the-generic-leds-layer.patch fs-ocfs2-stack_userc-fix-typo-in-ocfs2_control_release.patch o2dlm-fix-null-pointer-dereference-in-o2dlm_blocking_ast_wrapper-checkpatch-fixes.patch ocfs2-free-inode-when-i_count-becomes-zero.patch mm.patch memory-hotplug-add-sysfs-zones_online_to-attribute-fix.patch memory-hotplug-add-sysfs-zones_online_to-attribute-fix-2.patch mm-compaction-defer-each-zone-individually-instead-of-preferred-zone-fix.patch mm-compaction-khugepaged-should-not-give-up-due-to-need_resched-fix.patch prctl-pr_set_mm-introduce-pr_set_mm_map-operation-v3-fix.patch mm-introduce-do_shared_fault-and-drop-do_fault-fix-fix.patch do_shared_fault-check-that-mmap_sem-is-held.patch checkpatch-fix-spello.patch fs-proc-task_mmuc-shift-mm_access-from-m_start-to-proc_maps_open-checkpatch-fixes.patch fs-proc-task_mmuc-simplify-the-vma_stop-logic-checkpatch-fixes.patch fs-proc-task_nommuc-shift-mm_access-from-m_start-to-proc_maps_open-checkpatch-fixes.patch linux-next.patch drivers-gpio-gpio-zevioc-fix-build.patch mm-replace-remap_file_pages-syscall-with-emulation.patch watchdog-control-hard-lockup-detection-default-fix.patch debugging-keep-track-of-page-owners.patch debugging-keep-track-of-page-owners-fix.patch journal_add_journal_head-debug.patch journal_add_journal_head-debug-fix.patch kernel-forkc-export-kernel_thread-to-modules.patch mutex-subsystem-synchro-test-module.patch slab-leaks3-default-y.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html