NTFS: Improve scalability by changing the driver global spin lock in
fs/ntfs/aops.c::ntfs_end_buffer_async_read() to a bit spin lock
in the first buffer head of a page.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
diff --git a/fs/ntfs/ChangeLog b/fs/ntfs/ChangeLog
index 029f856..32a4150 100644
--- a/fs/ntfs/ChangeLog
+++ b/fs/ntfs/ChangeLog
@@ -86,6 +86,9 @@
- Fix fs/ntfs/aops.c::ntfs_{read,write}_block() to handle the case
where a concurrent truncate has truncated the runlist under our feet.
- Fix page_has_buffers()/page_buffers() handling in fs/ntfs/aops.c.
+ - In fs/ntfs/aops.c::ntfs_end_buffer_async_read(), use a bit spin lock
+ in the first buffer head instead of a driver global spin lock to
+ improve scalability.
2.1.23 - Implement extension of resident files and make writing safe as well as
many bug fixes, cleanups, and enhancements...