diff options
| author |   Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2015-10-12 15:41:29 +1100 |
|---|---|---|
| committer |   Dave Chinner <david@fromorbit.com> | 2015-10-12 15:41:29 +1100 |
| commit | 5bf97b1cb430a3a6da4341ae913299706ebc52f5 (patch) | |
| tree | dbbf0459334e68d36b27baeabe3d2c69a545ca77 /fs/xfs/kmem.c | |
| parent | Linux 4.3-rc2 (diff) | |
| download | linux-dev-5bf97b1cb430a3a6da4341ae913299706ebc52f5.tar.xz linux-dev-5bf97b1cb430a3a6da4341ae913299706ebc52f5.zip | |
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/kmem.c')
| -rw-r--r-- | fs/xfs/kmem.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c index a7a3a63bb360..535c13677e7a 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); } |