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| author | Andy Grover | 2010-05-25 05:12:41 +0200 |
|---|---|---|
| committer | Andy Grover | 2010-09-09 03:15:20 +0200 |
| commit | 0b088e003ccf316a76c51be5dec2d70b93be3be8 (patch) | |
| tree | 76fb8b9ab49729a97e137b73bbf4e12b65cde89d /net/rds/page.c | |
| parent | RDS/IB: disconnect when IB devices are removed (diff) | |
| download | kernel-qcow2-linux-0b088e003ccf316a76c51be5dec2d70b93be3be8.tar.gz kernel-qcow2-linux-0b088e003ccf316a76c51be5dec2d70b93be3be8.tar.xz kernel-qcow2-linux-0b088e003ccf316a76c51be5dec2d70b93be3be8.zip | |
RDS: Use page_remainder_alloc() for recv bufs
Instead of splitting up a page into RDS_FRAG_SIZE chunks
ourselves, ask rds_page_remainder_alloc() to do it. While it
is possible PAGE_SIZE > FRAG_SIZE, on x86en it isn't, so having
duplicate "carve up a page into buffers" code seems excessive.
The other modification this spawns is the use of a single
struct scatterlist in rds_page_frag instead of a bare page ptr.
This causes verbosity to increase in some places, and decrease
in others.
Finally, I decided to unify the lifetimes and alloc/free of
rds_page_frag and its page. This is a nice simplification in itself,
but will be extra-nice once we come to adding cmason's recycling
patch.
Signed-off-by: Andy Grover <andy.grover@oracle.com>
Diffstat (limited to 'net/rds/page.c')
| -rw-r--r-- | net/rds/page.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/rds/page.c b/net/rds/page.c index e5b2527ae257..5e44f5ae7898 100644 --- a/net/rds/page.c +++ b/net/rds/page.c @@ -186,6 +186,7 @@ out: ret ? 0 : scat->length); return ret; } +EXPORT_SYMBOL_GPL(rds_page_remainder_alloc); static int rds_page_remainder_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu) |