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authorSteven Whitehouse <swhiteho@redhat.com>2012-07-31 15:21:20 +0100
committerSteven Whitehouse <swhiteho@redhat.com>2012-09-24 10:46:56 +0100
commit4a993fb1503d11496974bd86c0b7123f63d9c8a2 (patch)
tree5d5d0da84412f95995cc6d1aa95d3bca1967f82c /fs/gfs2/rgrp.h
parent71f890f7f758f340215d48fed5223f9cce05b652 (diff)
downloadlinux-4a993fb1503d11496974bd86c0b7123f63d9c8a2.tar.bz2
GFS2: Add structure to contain rgrp, bitmap, offset tuple
This patch introduces a new structure, gfs2_rbm, which is a tuple of a resource group, a bitmap within the resource group and an offset within that bitmap. This is designed to make manipulating these sets of variables easier. There is also a new helper function which converts this representation back to a disk block address. In addition, the rbtree nodes which are used for the reservations were not being correctly initialised, which is now fixed. Also, the tracing was not passing through the inode where it should have been. That is mostly fixed aside from one corner case. This needs to be revisited since there can also be a NULL rgrp in some cases which results in the device being incorrect in the trace. This is intended to be the first step towards cleaning up some of the allocation code, and some further bug fixes. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/rgrp.h')
-rw-r--r--fs/gfs2/rgrp.h16
1 files changed, 5 insertions, 11 deletions
diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h
index 0b0e9cc7e3d9..c98f6af07e1c 100644
--- a/fs/gfs2/rgrp.h
+++ b/fs/gfs2/rgrp.h
@@ -46,7 +46,7 @@ extern int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *n,
bool dinode, u64 *generation);
extern int gfs2_rs_alloc(struct gfs2_inode *ip);
-extern void gfs2_rs_deltree(struct gfs2_blkreserv *rs);
+extern void gfs2_rs_deltree(struct gfs2_inode *ip, struct gfs2_blkreserv *rs);
extern void gfs2_rs_delete(struct gfs2_inode *ip);
extern void __gfs2_free_blocks(struct gfs2_inode *ip, u64 bstart, u32 blen, int meta);
extern void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen);
@@ -73,22 +73,16 @@ extern int gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset,
const struct gfs2_bitmap *bi, unsigned minlen, u64 *ptrimmed);
extern int gfs2_fitrim(struct file *filp, void __user *argp);
-/* This is how to tell if a multi-block reservation is in the rgrp tree: */
-static inline int gfs2_rs_active(struct gfs2_blkreserv *rs)
+/* This is how to tell if a reservation is in the rgrp tree: */
+static inline bool gfs2_rs_active(struct gfs2_blkreserv *rs)
{
- if (rs && rs->rs_bi)
- return 1;
- return 0;
+ return rs && !RB_EMPTY_NODE(&rs->rs_node);
}
+
static inline u32 gfs2_bi2rgd_blk(const struct gfs2_bitmap *bi, u32 blk)
{
return (bi->bi_start * GFS2_NBBY) + blk;
}
-static inline u64 gfs2_rs_startblk(const struct gfs2_blkreserv *rs)
-{
- return gfs2_bi2rgd_blk(rs->rs_bi, rs->rs_biblk) + rs->rs_rgd->rd_data0;
-}
-
#endif /* __RGRP_DOT_H__ */