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| author | David Chinner <dgc@sgi.com> | 2005-11-02 10:33:05 +1100 |
|---|---|---|
| committer | Nathan Scott <nathans@sgi.com> | 2005-11-02 10:33:05 +1100 |
| commit | e8c8b3a79d85c22d3665b97dde843dc4d8d7ae37 (patch) | |
| tree | a82b58ebc5c40474cdc53c91bd135b97034de565 /fs/xfs/xfs_vnodeops.c | |
| parent | ee34807a65aa0c5911dc27682863afca780a003e (diff) | |
| download | blackbird-obmc-linux-e8c8b3a79d85c22d3665b97dde843dc4d8d7ae37.tar.gz blackbird-obmc-linux-e8c8b3a79d85c22d3665b97dde843dc4d8d7ae37.zip | |
[XFS] Introduce two new mount options (nolargeio/largeio) to allow
filesystems to expose the filesystem stripe width in stat(2) rather than
the page cache size. This allows applications requiring high bandwidth to
easily determine the optimum I/O size for the underlying filesystem. The
default is to report the page cache size (i.e. "nolargeio").
SGI-PV: 942818
SGI-Modid: xfs-linux:xfs-kern:23830a
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_vnodeops.c')
| -rw-r--r-- | fs/xfs/xfs_vnodeops.c | 35 |
1 files changed, 1 insertions, 34 deletions
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index e2bf2ef58b66..8221b11a48c0 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -181,40 +181,7 @@ xfs_getattr( vap->va_rdev = 0; if (!(ip->i_d.di_flags & XFS_DIFLAG_REALTIME)) { - -#if 0 - /* Large block sizes confuse various - * user space programs, so letting the - * stripe size through is not a good - * idea for now. - */ - vap->va_blocksize = mp->m_swidth ? - /* - * If the underlying volume is a stripe, then - * return the stripe width in bytes as the - * recommended I/O size. - */ - (mp->m_swidth << mp->m_sb.sb_blocklog) : - /* - * Return the largest of the preferred buffer - * sizes since doing small I/Os into larger - * buffers causes buffers to be decommissioned. - * The value returned is in bytes. - */ - (1 << (int)MAX(mp->m_readio_log, - mp->m_writeio_log)); - -#else - vap->va_blocksize = - /* - * Return the largest of the preferred buffer - * sizes since doing small I/Os into larger - * buffers causes buffers to be decommissioned. - * The value returned is in bytes. - */ - 1 << (int)MAX(mp->m_readio_log, - mp->m_writeio_log); -#endif + vap->va_blocksize = xfs_preferred_iosize(mp); } else { /* |
