xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[XFS] On machines with more than 8 cpus, when running parallel I/O

Browse Source 
threads, the incore superblock lock becomes the limiting factor for
buffered write throughput. Make the contended fields in the incore
superblock use per-cpu counters so that there is no global lock to limit
scalability.

SGI-PV: 946630
SGI-Modid: xfs-linux-melb:xfs-kern:25106a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
This commit is contained in:
David Chinner
2006-03-14 13:13:09 +11:00
committed by Nathan Scott
parent 9f4cbecd7e
commit 8d280b98cf
5 changed files with 586 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
fs/xfs/linux-2.6/xfs_linux.h
View File

@@ -100,6 +100,11 @@
*/
#undef HAVE_REFCACHE /* reference cache not needed for NFS in 2.6 */
#define HAVE_SENDFILE /* sendfile(2) exists in 2.6, but not in 2.4 */
#if CONFIG_SMP
#define HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */
#else
#undef HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */
#endif
/*
* State flag for unwritten extent buffers.