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linux-sg2042
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Merge branch 'for-2.6.22' of git://git.kernel.dk/data/git/linux-2.6-block 

* 'for-2.6.22' of git://git.kernel.dk/data/git/linux-2.6-block:
  [PATCH] ll_rw_blk: fix missing bounce in blk_rq_map_kern()
  [PATCH] splice: always call into page_cache_readahead()
  [PATCH] splice(): fix interaction with readahead
This commit is contained in:
Linus Torvalds 2007-05-08 11:34:52 -07:00
parent 18062a91d2 821de3a27b
commit 02a93208ed
2 changed files with 9 additions and 9 deletions
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1
block/ll_rw_blk.c
View File

@ -2558,6 +2558,7 @@ int blk_rq_map_kern(request_queue_t *q, struct request *rq, void *kbuf,
bio->bi_rw |= (1 << BIO_RW);
blk_rq_bio_prep(q, rq, bio);
blk_queue_bounce(q, &rq->bio);
rq->buffer = rq->data = NULL;
return 0;
}

17
fs/splice.c
View File

@ -289,12 +289,10 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
nr_pages = PIPE_BUFFERS;
/*
* Initiate read-ahead on this page range. however, don't call into
* read-ahead if this is a non-zero offset (we are likely doing small
* chunk splice and the page is already there) for a single page.
* Don't try to 2nd guess the read-ahead logic, call into
* page_cache_readahead() like the page cache reads would do.
*/
if (!loff || nr_pages > 1)
page_cache_readahead(mapping, &in->f_ra, in, index, nr_pages);
page_cache_readahead(mapping, &in->f_ra, in, index, nr_pages);
/*
* Now fill in the holes:
@ -378,10 +376,11 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
* If in nonblock mode then dont block on waiting
* for an in-flight io page
*/
if (flags & SPLICE_F_NONBLOCK)
break;
lock_page(page);
if (flags & SPLICE_F_NONBLOCK) {
if (TestSetPageLocked(page))
break;
} else
lock_page(page);
/*
* page was truncated, stop here. if this isn't the