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authorEric Sandeen <sandeen@sandeen.net>2007-08-16 16:24:31 +1000
committerTim Shimmin <tes@chook.melbourne.sgi.com>2007-10-15 16:37:46 +1000
commit40906630f18fdf5ac27f5928c20f76eeac8fb0f0 (patch)
treed567e11ad9234ad37ed59213ad8344891d573c78
parentcd8b0a97bd9216578a44a9bf82188cd901295964 (diff)
downloadop-kernel-dev-40906630f18fdf5ac27f5928c20f76eeac8fb0f0.zip
op-kernel-dev-40906630f18fdf5ac27f5928c20f76eeac8fb0f0.tar.gz
[XFS] Remove m_nreadaheads
m_nreadaheads in the mount struct is never used; remove it and the various macros assigned to it. Also remove a couple other unused macros in the same areas. Removes one user of xfs_physmem. SGI-PV: 968563 SGI-Modid: xfs-linux-melb:xfs-kern:29322a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
-rw-r--r--fs/xfs/linux-2.6/xfs_lrw.h5
-rw-r--r--fs/xfs/xfs_mount.c10
-rw-r--r--fs/xfs/xfs_mount.h1
-rw-r--r--fs/xfs/xfs_rw.h26
4 files changed, 0 insertions, 42 deletions
diff --git a/fs/xfs/linux-2.6/xfs_lrw.h b/fs/xfs/linux-2.6/xfs_lrw.h
index 7c60a1e..1ad29ba 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.h
+++ b/fs/xfs/linux-2.6/xfs_lrw.h
@@ -71,11 +71,6 @@ extern void xfs_inval_cached_trace(struct xfs_iocore *,
#define xfs_inval_cached_trace(io, offset, len, first, last)
#endif
-/*
- * Maximum count of bmaps used by read and write paths.
- */
-#define XFS_MAX_RW_NBMAPS 4
-
extern int xfs_bmap(struct bhv_desc *, xfs_off_t, ssize_t, int,
struct xfs_iomap *, int *);
extern int xfsbdstrat(struct xfs_mount *, struct xfs_buf *);
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index a66b398..4458e70 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -871,16 +871,6 @@ xfs_mountfs(
writeio_log = mp->m_writeio_log;
}
- /*
- * Set the number of readahead buffers to use based on
- * physical memory size.
- */
- if (xfs_physmem <= 4096) /* <= 16MB */
- mp->m_nreadaheads = XFS_RW_NREADAHEAD_16MB;
- else if (xfs_physmem <= 8192) /* <= 32MB */
- mp->m_nreadaheads = XFS_RW_NREADAHEAD_32MB;
- else
- mp->m_nreadaheads = XFS_RW_NREADAHEAD_K32;
if (sbp->sb_blocklog > readio_log) {
mp->m_readio_log = sbp->sb_blocklog;
} else {
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 76ad747..1a5d1d3 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -362,7 +362,6 @@ typedef struct xfs_mount {
__uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
__uint8_t m_agno_log; /* log #ag's */
__uint8_t m_agino_log; /* #bits for agino in inum */
- __uint8_t m_nreadaheads; /* #readahead buffers */
__uint16_t m_inode_cluster_size;/* min inode buf size */
uint m_blockmask; /* sb_blocksize-1 */
uint m_blockwsize; /* sb_blocksize in words */
diff --git a/fs/xfs/xfs_rw.h b/fs/xfs/xfs_rw.h
index fcf28db..943bddd 100644
--- a/fs/xfs/xfs_rw.h
+++ b/fs/xfs/xfs_rw.h
@@ -23,32 +23,6 @@ struct xfs_inode;
struct xfs_mount;
/*
- * Maximum count of bmaps used by read and write paths.
- */
-#define XFS_MAX_RW_NBMAPS 4
-
-/*
- * Counts of readahead buffers to use based on physical memory size.
- * None of these should be more than XFS_MAX_RW_NBMAPS.
- */
-#define XFS_RW_NREADAHEAD_16MB 2
-#define XFS_RW_NREADAHEAD_32MB 3
-#define XFS_RW_NREADAHEAD_K32 4
-#define XFS_RW_NREADAHEAD_K64 4
-
-/*
- * Maximum size of a buffer that we\'ll map. Making this
- * too big will degrade performance due to the number of
- * pages which need to be gathered. Making it too small
- * will prevent us from doing large I/O\'s to hardware that
- * needs it.
- *
- * This is currently set to 512 KB.
- */
-#define XFS_MAX_BMAP_LEN_BB 1024
-#define XFS_MAX_BMAP_LEN_BYTES 524288
-
-/*
* Convert the given file system block to a disk block.
* We have to treat it differently based on whether the
* file is a real time file or not, because the bmap code
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