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authorDavid Chinner <dgc@sgi.com>2007-06-18 16:50:37 +1000
committerTim Shimmin <tes@chook.melbourne.sgi.com>2007-07-14 15:35:36 +1000
commit957d0ebed04239b734552c7da3fae9094b6f090c (patch)
tree6f5034b22028a03e31771d1a3fa5ad8d59557c09 /fs/xfs/xfs_rw.h
parent84e1e99f112dead8f9ba036c02d24a9f5ce7f544 (diff)
downloadop-kernel-dev-957d0ebed04239b734552c7da3fae9094b6f090c.zip
op-kernel-dev-957d0ebed04239b734552c7da3fae9094b6f090c.tar.gz
[XFS] Cleanup inode extent size hint extraction
SGI-PV: 966004 SGI-Modid: xfs-linux-melb:xfs-kern:28866a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_rw.h')
-rw-r--r--fs/xfs/xfs_rw.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/fs/xfs/xfs_rw.h b/fs/xfs/xfs_rw.h
index ba74000..fcf28db 100644
--- a/fs/xfs/xfs_rw.h
+++ b/fs/xfs/xfs_rw.h
@@ -77,6 +77,28 @@ xfs_fsb_to_db_io(struct xfs_iocore *io, xfs_fsblock_t fsb)
#define XFS_FREE_EOF_LOCK (1<<0)
#define XFS_FREE_EOF_NOLOCK (1<<1)
+
+/*
+ * helper function to extract extent size hint from inode
+ */
+STATIC_INLINE xfs_extlen_t
+xfs_get_extsz_hint(
+ xfs_inode_t *ip)
+{
+ xfs_extlen_t extsz;
+
+ if (unlikely(ip->i_d.di_flags & XFS_DIFLAG_REALTIME)) {
+ extsz = (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)
+ ? ip->i_d.di_extsize
+ : ip->i_mount->m_sb.sb_rextsize;
+ ASSERT(extsz);
+ } else {
+ extsz = (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)
+ ? ip->i_d.di_extsize : 0;
+ }
+ return extsz;
+}
+
/*
* Prototypes for functions in xfs_rw.c.
*/
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