diff options
| author | Kefeng Wang <[email protected]> | 2022-12-05 22:03:27 +0800 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2022-12-11 18:12:21 -0800 |
| commit | de2e5171433126d340573cb7d0d4fcac084ab2a0 (patch) | |
| tree | 853a2c011413ff9a83d08bf53b6a8a3198a16387 /lib/mpi/mpi-mod.c | |
| parent | 8614d6c5eda005ad72b37afeaae2879d7c101b18 (diff) | |
mm: add cond_resched() in swapin_walk_pmd_entry()
When handling MADV_WILLNEED in madvise(), a soflockup may occurr in
swapin_walk_pmd_entry() if swapping in lots of memory on a slow device.
Add a cond_resched() to avoid the possible softlockup.
Link: https://lkml.kernel.org/r/[email protected]
Fixes: 1998cc048901 ("mm: make madvise(MADV_WILLNEED) support swap file prefetch")
Signed-off-by: Kefeng Wang <[email protected]>
Cc: Shaohua Li <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Rik van Riel <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-mod.c')
0 files changed, 0 insertions, 0 deletions