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authorJeff Mahoney <jeffm@suse.com>2006-09-30 23:28:44 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-01 00:39:28 -0700
commit5065227b46235ec0131b383cc2f537069b55c6b6 (patch)
tree12187734ef619626c901b9d2b43ad72286d4d258 /include
parent6f01046b35d940079822827498a7dd6d3eec8c6b (diff)
downloadop-kernel-dev-5065227b46235ec0131b383cc2f537069b55c6b6.zip
op-kernel-dev-5065227b46235ec0131b383cc2f537069b55c6b6.tar.gz
[PATCH] reiserfs: on-demand bitmap loading
This is the patch the three previous ones have been leading up to. It changes the behavior of ReiserFS from loading and caching all the bitmaps as special, to treating the bitmaps like any other bit of metadata and just letting the system-wide caches figure out what to hang on to. Buffer heads are allocated on the fly, so there is no need to retain pointers to all of them. The caching of the metadata occurs when the data is read and updated, and is considered invalid and uncached until then. I needed to remove the vs-4040 check for performing a duplicate operation on a particular bit. The reason is that while the other sites for working with bitmaps are allowed to schedule, is_reusable() is called from do_balance(), which will panic if a schedule occurs in certain places. The benefit of on-demand bitmaps clearly outweighs a sanity check that depends on a compile-time option that is discouraged. [akpm@osdl.org: warning fix] Signed-off-by: Jeff Mahoney <jeffm@suse.com> Cc: <reiserfs-dev@namesys.com> 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/reiserfs_fs_sb.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/reiserfs_fs_sb.h b/include/linux/reiserfs_fs_sb.h
index 4f21ad3..73e0bec 100644
--- a/include/linux/reiserfs_fs_sb.h
+++ b/include/linux/reiserfs_fs_sb.h
@@ -267,7 +267,6 @@ struct reiserfs_bitmap_info {
// FIXME: Won't work with block sizes > 8K
__u16 first_zero_hint;
__u16 free_count;
- struct buffer_head *bh; /* the actual bitmap */
};
struct proc_dir_entry;
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