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authorSteven Whitehouse <swhiteho@redhat.com>2014-03-03 13:35:57 +0000
committerSteven Whitehouse <swhiteho@redhat.com>2014-03-03 13:50:12 +0000
commitb50f227bddf110ae4ea2df1ebdf7e282ad481803 (patch)
treee3c968ae81f8ac2c2c425b13543728a32b359d2f /fs/gfs2/super.c
parentfcf10d38afd2d39d08bf76c48ff9c12345770678 (diff)
GFS2: Clean up journal extent mapping
This patch fixes a long standing issue in mapping the journal extents. Most journals will consist of only a single extent, and although the cache took account of that by merging extents, it did not actually map large extents, but instead was doing a block by block mapping. Since the journal was only being mapped on mount, this was not normally noticeable. With the updated code, it is now possible to use the same extent mapping system during journal recovery (which will be added in a later patch). This will allow checking of the integrity of the journal before any reply of the journal content is attempted. For this reason the code is moving to bmap.c, since it will be used more widely in due course. An exercise left for the reader is to compare the new function gfs2_map_journal_extents() with gfs2_write_alloc_required() Additionally, should there be a failure, the error reporting is also updated to show more detail about what went wrong. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/super.c')
-rw-r--r--fs/gfs2/super.c12
1 files changed, 2 insertions, 10 deletions
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 60f60f6181f3..25747440ebbb 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -295,9 +295,8 @@ int gfs2_mount_args(struct gfs2_args *args, char *options)
void gfs2_jindex_free(struct gfs2_sbd *sdp)
{
- struct list_head list, *head;
+ struct list_head list;
struct gfs2_jdesc *jd;
- struct gfs2_journal_extent *jext;
spin_lock(&sdp->sd_jindex_spin);
list_add(&list, &sdp->sd_jindex_list);
@@ -307,14 +306,7 @@ void gfs2_jindex_free(struct gfs2_sbd *sdp)
while (!list_empty(&list)) {
jd = list_entry(list.next, struct gfs2_jdesc, jd_list);
- head = &jd->extent_list;
- while (!list_empty(head)) {
- jext = list_entry(head->next,
- struct gfs2_journal_extent,
- extent_list);
- list_del(&jext->extent_list);
- kfree(jext);
- }
+ gfs2_free_journal_extents(jd);
list_del(&jd->jd_list);
iput(jd->jd_inode);
kfree(jd);