Hi,
On 10/07/14 17:56, Bob Peterson wrote:
Hi,
This patch speeds up fsck.gfs2 by issuing read-ahead for each of the
dinodes found in each of the bitmaps, prior to processing the bitmap.
Looks good to me,
Steve.
Regards,
Bob Peterson
Red Hat File Systems
Signed-off-by: Bob Peterson <[email protected]>
---
gfs2/fsck/pass1.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/gfs2/fsck/pass1.c b/gfs2/fsck/pass1.c
index fec2f64..90ca357 100644
--- a/gfs2/fsck/pass1.c
+++ b/gfs2/fsck/pass1.c
@@ -1442,6 +1442,10 @@ static int pass1_process_bitmap(struct gfs2_sbd *sdp,
struct rgrp_tree *rgd, uin
struct gfs2_inode *ip;
uint8_t q;
+ /* Issue read-ahead for all dinodes in this bitmap */
+ for (i = 0; i < n; i++)
+ posix_fadvise(sdp->device_fd, ibuf[i] * sdp->bsize, sdp->bsize,
+ POSIX_FADV_WILLNEED);
for (i = 0; i < n; i++) {
int is_inode;
uint32_t check_magic;
