diff options
| author | Bernd Schubert <[email protected]> | 2012-05-11 16:36:44 +0200 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2012-05-11 16:45:12 +0200 |
| commit | f908ee9463b09ddd05e1c1a0111132212dc05fac (patch) | |
| tree | af80b227ec2049aa23fc3a8867e70fd685a4d34a /tools/perf/util/scripting-engines/trace-event-perl.c | |
| parent | 080399aaaf3531f5b8761ec0ac30ff98891e8686 (diff) | |
bio allocation failure due to bio_get_nr_vecs()
The number of bio_get_nr_vecs() is passed down via bio_alloc() to
bvec_alloc_bs(), which fails the bio allocation if
nr_iovecs > BIO_MAX_PAGES. For the underlying caller this causes an
unexpected bio allocation failure.
Limiting to queue_max_segments() is not sufficient, as max_segments
also might be very large.
bvec_alloc_bs(gfp_mask, nr_iovecs, ) => NULL when nr_iovecs > BIO_MAX_PAGES
bio_alloc_bioset(gfp_mask, nr_iovecs, ...)
bio_alloc(GFP_NOIO, nvecs)
xfs_alloc_ioend_bio()
Signed-off-by: Bernd Schubert <[email protected]>
Cc: [email protected]
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-perl.c')
0 files changed, 0 insertions, 0 deletions