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[PATCH] splice: always call into page_cache_readahead() 

Don't try to guess what the read-ahead logic will do, allow it
to make its own decisions.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2007-05-08 08:46:19 +02:00
parent 9ae9d68cbf
commit 86aa5ac53e
1 changed files with 3 additions and 5 deletions
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8
fs/splice.c
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@ -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: