xfs-linux/xfs_rw.h - diff

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-version 1.82, 2007/06/08 16:04:48
+version 1.83, 2007/08/02 16:07:51
  Line 23  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