diff options
| author | Bob Peterson <rpeterso@redhat.com> | 2018-01-17 00:01:33 +0100 |
|---|---|---|
| committer | Bob Peterson <rpeterso@redhat.com> | 2018-01-23 07:38:53 -0700 |
| commit | c1696fb85d33194cf65c7ebfc82a75696299c3a3 (patch) | |
| tree | e6c2faba8786f73db8270822c4fb263cad57b207 /fs/gfs2/lops.c | |
| parent | 0ff5916ad4eb857e03e7586665d1c022ef3277f6 (diff) | |
GFS2: Introduce new gfs2_log_header_v2
This patch adds a new structure called gfs2_log_header_v2 which is used
to store expanded fields into previously unused areas of the log headers
(i.e., this change is backwards compatible). Some of these are used for
debug purposes so we can backtrack when problems occur. Others are
reserved for future expansion.
This patch is based on a prototype from Steve Whitehouse.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2/lops.c')
| -rw-r--r-- | fs/gfs2/lops.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index c8ff7b7954f0..4a60221c678f 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -18,6 +18,7 @@ #include <linux/fs.h> #include <linux/list_sort.h> +#include "dir.h" #include "gfs2.h" #include "incore.h" #include "inode.h" @@ -138,7 +139,7 @@ static void gfs2_log_incr_head(struct gfs2_sbd *sdp) sdp->sd_log_flush_head = 0; } -static u64 gfs2_log_bmap(struct gfs2_sbd *sdp) +u64 gfs2_log_bmap(struct gfs2_sbd *sdp) { unsigned int lbn = sdp->sd_log_flush_head; struct gfs2_journal_extent *je; @@ -306,23 +307,22 @@ static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno) return gfs2_log_alloc_bio(sdp, blkno); } - /** * gfs2_log_write - write to log * @sdp: the filesystem * @page: the page to write * @size: the size of the data to write * @offset: the offset within the page + * @blkno: block number of the log entry * * Try and add the page segment to the current bio. If that fails, * submit the current bio to the device and create a new one, and * then add the page segment to that. */ -static void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, - unsigned size, unsigned offset) +void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, + unsigned size, unsigned offset, u64 blkno) { - u64 blkno = gfs2_log_bmap(sdp); struct bio *bio; int ret; @@ -348,7 +348,8 @@ static void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) { - gfs2_log_write(sdp, bh->b_page, bh->b_size, bh_offset(bh)); + gfs2_log_write(sdp, bh->b_page, bh->b_size, bh_offset(bh), + gfs2_log_bmap(sdp)); } /** @@ -365,7 +366,8 @@ static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) { struct super_block *sb = sdp->sd_vfs; - gfs2_log_write(sdp, page, sb->s_blocksize, 0); + gfs2_log_write(sdp, page, sb->s_blocksize, 0, + gfs2_log_bmap(sdp)); } static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, |