elevator.c (da6c5c720c52cc717124f8f0830b710ea6a092fd) elevator.c (1f98a13f623e0ef666690a18c1250335fc6d7ef1)
1/*
2 * Block device elevator/IO-scheduler.
3 *
4 * Copyright (C) 2000 Andrea Arcangeli <andrea@suse.de> SuSE
5 *
6 * 30042000 Jens Axboe <axboe@kernel.dk> :
7 *
8 * Split the elevator a bit so that it is possible to choose a different

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74int elv_rq_merge_ok(struct request *rq, struct bio *bio)
75{
76 if (!rq_mergeable(rq))
77 return 0;
78
79 /*
80 * Don't merge file system requests and discard requests
81 */
1/*
2 * Block device elevator/IO-scheduler.
3 *
4 * Copyright (C) 2000 Andrea Arcangeli <andrea@suse.de> SuSE
5 *
6 * 30042000 Jens Axboe <axboe@kernel.dk> :
7 *
8 * Split the elevator a bit so that it is possible to choose a different

--- 65 unchanged lines hidden (view full) ---

74int elv_rq_merge_ok(struct request *rq, struct bio *bio)
75{
76 if (!rq_mergeable(rq))
77 return 0;
78
79 /*
80 * Don't merge file system requests and discard requests
81 */
82 if (bio_discard(bio) != bio_discard(rq->bio))
82 if (bio_rw_flagged(bio, BIO_RW_DISCARD) !=
83 bio_rw_flagged(rq->bio, BIO_RW_DISCARD))
83 return 0;
84
85 /*
86 * different data direction or already started, don't merge
87 */
88 if (bio_data_dir(bio) != rq_data_dir(rq))
89 return 0;
90

--- 1037 unchanged lines hidden --- 		84 return 0;
85
86 /*
87 * different data direction or already started, don't merge
88 */
89 if (bio_data_dir(bio) != rq_data_dir(rq))
90 return 0;
91

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