diff options
| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2015-10-12 04:41:29 (GMT) |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2015-10-12 04:41:29 (GMT) |
| commit | 5bf97b1cb430a3a6da4341ae913299706ebc52f5 (patch) | |
| tree | dbbf0459334e68d36b27baeabe3d2c69a545ca77 /fs/xfs | |
| parent | 1f93e4a96c9109378204c147b3eec0d0e8100fde (diff) | |
| download | linux-5bf97b1cb430a3a6da4341ae913299706ebc52f5.tar.xz | |
xfs: Print name and pid when memory allocation loops
This patch adds comm name and pid to warning messages printed by
kmem_alloc(), kmem_zone_alloc() and xfs_buf_allocate_memory().
This will help telling which memory allocations (e.g. kernel worker
threads, OOM victim tasks, neither) are stalling because these functions
are passing __GFP_NOWARN which suppresses not only backtrace but comm name
and pid.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/kmem.c | 10 | ||||
| -rw-r--r-- | fs/xfs/xfs_buf.c | 3 |
2 files changed, 8 insertions, 5 deletions
diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c index a7a3a63..535c136 100644 --- a/fs/xfs/kmem.c +++ b/fs/xfs/kmem.c @@ -55,8 +55,9 @@ kmem_alloc(size_t size, xfs_km_flags_t flags) return ptr; if (!(++retries % 100)) xfs_err(NULL, - "possible memory allocation deadlock in %s (mode:0x%x)", - __func__, lflags); + "%s(%u) possible memory allocation deadlock in %s (mode:0x%x)", + current->comm, current->pid, + __func__, lflags); congestion_wait(BLK_RW_ASYNC, HZ/50); } while (1); } @@ -120,8 +121,9 @@ kmem_zone_alloc(kmem_zone_t *zone, xfs_km_flags_t flags) return ptr; if (!(++retries % 100)) xfs_err(NULL, - "possible memory allocation deadlock in %s (mode:0x%x)", - __func__, lflags); + "%s(%u) possible memory allocation deadlock in %s (mode:0x%x)", + current->comm, current->pid, + __func__, lflags); congestion_wait(BLK_RW_ASYNC, HZ/50); } while (1); } diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 8ecffb3..cac62e1 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -354,7 +354,8 @@ retry: */ if (!(++retries % 100)) xfs_err(NULL, - "possible memory allocation deadlock in %s (mode:0x%x)", + "%s(%u) possible memory allocation deadlock in %s (mode:0x%x)", + current->comm, current->pid, __func__, gfp_mask); XFS_STATS_INC(xb_page_retries); |