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authorJan Kara <jack@suse.cz>2005-09-06 15:19:10 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-07 16:57:55 -0700
commita7662236253374012d364106b6dc9161bd929e2e (patch)
tree59f34811d18fef8195bc3200bdb2684598175f29 /include
parente6c9f5c1888097c936334bf9740024520ca47b8e (diff)
[PATCH] Make ll_rw_block() wait for buffer lock
Introduce new ll_rw_block() operation SWRITE meaning that block layer should wait for the buffer lock and write-out afterwards. Hence data in buffers at the time of call are guaranteed to be submitted to the disk. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/fs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 7e1b589842a..fd93ab7da90 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -69,6 +69,7 @@ extern int dir_notify_enable;
#define READ 0
#define WRITE 1
#define READA 2 /* read-ahead - don't block if no resources */
+#define SWRITE 3 /* for ll_rw_block() - wait for buffer lock */
#define SPECIAL 4 /* For non-blockdevice requests in request queue */
#define READ_SYNC (READ | (1 << BIO_RW_SYNC))
#define WRITE_SYNC (WRITE | (1 << BIO_RW_SYNC))