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| author | Eric Sandeen <sandeen@sandeen.net> | 2007-11-23 16:29:42 +1100 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2008-02-07 18:16:43 +1100 |
| commit | 71ddabb94a623d1e16e7e66898bf439ff78ecc41 (patch) | |
| tree | ded37e51148312db71e6a68b18c8bfca49b95112 /fs/xfs/xfs_inode.c | |
| parent | a67d7c5f5d25d0b13a4dfb182697135b014fa478 (diff) | |
| download | linux-71ddabb94a623d1e16e7e66898bf439ff78ecc41.tar.gz linux-71ddabb94a623d1e16e7e66898bf439ff78ecc41.tar.bz2 linux-71ddabb94a623d1e16e7e66898bf439ff78ecc41.zip | |
[XFS] optimize XFS_IS_REALTIME_INODE w/o realtime config
Use XFS_IS_REALTIME_INODE in more places, and #define it to 0 if
CONFIG_XFS_RT is off. This should be safe because mount checks in
xfs_rtmount_init:
so if we get mounted w/o CONFIG_XFS_RT, no realtime inodes should be
encountered after that.
Defining XFS_IS_REALTIME_INODE to 0 saves a bit of stack space,
presumeably gcc can optimize around the various "if (0)" type checks:
xfs_alloc_file_space -8 xfs_bmap_adjacent -16 xfs_bmapi -8
xfs_bmap_rtalloc -16 xfs_bunmapi -28 xfs_free_file_space -64 xfs_imap +8
<-- ? hmm. xfs_iomap_write_direct -12 xfs_qm_dqusage_adjust -4
xfs_qm_vop_chown_reserve -4
SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30014a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_inode.c')
| -rw-r--r-- | fs/xfs/xfs_inode.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 805cab7b2770..815ae978e3bd 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -1296,7 +1296,10 @@ xfs_isize_check( if ((ip->i_d.di_mode & S_IFMT) != S_IFREG) return; - if (ip->i_d.di_flags & (XFS_DIFLAG_REALTIME | XFS_DIFLAG_EXTSIZE)) + if (XFS_IS_REALTIME_INODE(ip)) + return; + + if (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE) return; nimaps = 2; |