Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=dcb3b83febd1028afbc4a32cf7642a6580e349c6
Commit:     dcb3b83febd1028afbc4a32cf7642a6580e349c6
Parent:     af3a2e8a3f3055ef269b09433bb28e33a0d1b8c0
Author:     Eric Sandeen <[EMAIL PROTECTED]>
AuthorDate: Thu Aug 16 16:25:33 2007 +1000
Committer:  Tim Shimmin <[EMAIL PROTECTED]>
CommitDate: Mon Oct 15 16:42:18 2007 +1000

    [XFS] clean up xfs_start_flags
    
    xfs_start_flags can make use of is_power_of_2 to tidy up the test a little
    bit.
    
    SGI-PV: 968563
    SGI-Modid: xfs-linux-melb:xfs-kern:29327a
    
    Signed-off-by: Eric Sandeen <[EMAIL PROTECTED]>
    Signed-off-by: David Chinner <[EMAIL PROTECTED]>
    Signed-off-by: Tim Shimmin <[EMAIL PROTECTED]>
---
 fs/xfs/xfs_log_priv.h |    4 ++--
 fs/xfs/xfs_vfsops.c   |    8 +++-----
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h
index e973972..db0d53f 100644
--- a/fs/xfs/xfs_log_priv.h
+++ b/fs/xfs/xfs_log_priv.h
@@ -35,11 +35,11 @@ struct xfs_mount;
 #define XLOG_VERSION_1         1
 #define XLOG_VERSION_2         2               /* Large IClogs, Log sunit */
 #define XLOG_VERSION_OKBITS    (XLOG_VERSION_1 | XLOG_VERSION_2)
-#define XLOG_RECORD_BSIZE      (16*1024)       /* eventually 32k */
+#define XLOG_MIN_RECORD_BSIZE  (16*1024)       /* eventually 32k */
 #define XLOG_BIG_RECORD_BSIZE  (32*1024)       /* 32k buffers */
 #define XLOG_MAX_RECORD_BSIZE  (256*1024)
 #define XLOG_HEADER_CYCLE_SIZE (32*1024)       /* cycle data in header */
-#define XLOG_RECORD_BSHIFT     14              /* 16384 == 1 << 14 */
+#define XLOG_MIN_RECORD_BSHIFT 14              /* 16384 == 1 << 14 */
 #define XLOG_BIG_RECORD_BSHIFT 15              /* 32k == 1 << 15 */
 #define XLOG_MAX_RECORD_BSHIFT 18              /* 256k == 1 << 18 */
 #define XLOG_BTOLSUNIT(log, b)  (((b)+(log)->l_mp->m_sb.sb_logsunit-1) / \
diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c
index 11f5ea2..47c8907 100644
--- a/fs/xfs/xfs_vfsops.c
+++ b/fs/xfs/xfs_vfsops.c
@@ -238,11 +238,9 @@ xfs_start_flags(
        mp->m_logbufs = ap->logbufs;
        if (ap->logbufsize != -1 &&
            ap->logbufsize !=  0 &&
-           ap->logbufsize != 16 * 1024 &&
-           ap->logbufsize != 32 * 1024 &&
-           ap->logbufsize != 64 * 1024 &&
-           ap->logbufsize != 128 * 1024 &&
-           ap->logbufsize != 256 * 1024) {
+           (ap->logbufsize < XLOG_MIN_RECORD_BSIZE ||
+            ap->logbufsize > XLOG_MAX_RECORD_BSIZE ||
+            !is_power_of_2(ap->logbufsize))) {
                cmn_err(CE_WARN,
        "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
                        ap->logbufsize);
-
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