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| author | Dave Chinner <dchinner@redhat.com> | 2013-08-12 20:50:04 +1000 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2013-08-13 16:10:21 -0500 |
| commit | 166d13688a0e2d0aa379e259af8e2ee6a401de9a (patch) | |
| tree | 2f30092475185ee80d941e0be7689a0f5151be9f /fs/xfs/xfs_inode_item.c | |
| parent | 050a1952c3f9304eccddc4f084e2401b5205ff55 (diff) | |
| download | talos-obmc-linux-166d13688a0e2d0aa379e259af8e2ee6a401de9a.tar.gz talos-obmc-linux-166d13688a0e2d0aa379e259af8e2ee6a401de9a.zip | |
xfs: return log item size in IOP_SIZE
To begin optimising the CIL commit process, we need to have IOP_SIZE
return both the number of vectors and the size of the data pointed
to by the vectors. This enables us to calculate the size ofthe
memory allocation needed before the formatting step and reduces the
number of memory allocations per item by one.
While there, kill the IOP_SIZE macro.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_inode_item.c')
| -rw-r--r-- | fs/xfs/xfs_inode_item.c | 53 |
1 files changed, 35 insertions, 18 deletions
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index f76ff52e43c0..378081109844 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -47,32 +47,44 @@ static inline struct xfs_inode_log_item *INODE_ITEM(struct xfs_log_item *lip) * inode core, and possibly one for the inode data/extents/b-tree root * and one for the inode attribute data/extents/b-tree root. */ -STATIC uint +STATIC void xfs_inode_item_size( - struct xfs_log_item *lip) + struct xfs_log_item *lip, + int *nvecs, + int *nbytes) { struct xfs_inode_log_item *iip = INODE_ITEM(lip); struct xfs_inode *ip = iip->ili_inode; - uint nvecs = 2; + + *nvecs += 2; + *nbytes += sizeof(struct xfs_inode_log_format) + + xfs_icdinode_size(ip->i_d.di_version); switch (ip->i_d.di_format) { case XFS_DINODE_FMT_EXTENTS: if ((iip->ili_fields & XFS_ILOG_DEXT) && ip->i_d.di_nextents > 0 && - ip->i_df.if_bytes > 0) - nvecs++; + ip->i_df.if_bytes > 0) { + /* worst case, doesn't subtract delalloc extents */ + *nbytes += XFS_IFORK_DSIZE(ip); + *nvecs += 1; + } break; case XFS_DINODE_FMT_BTREE: if ((iip->ili_fields & XFS_ILOG_DBROOT) && - ip->i_df.if_broot_bytes > 0) - nvecs++; + ip->i_df.if_broot_bytes > 0) { + *nbytes += ip->i_df.if_broot_bytes; + *nvecs += 1; + } break; case XFS_DINODE_FMT_LOCAL: if ((iip->ili_fields & XFS_ILOG_DDATA) && - ip->i_df.if_bytes > 0) - nvecs++; + ip->i_df.if_bytes > 0) { + *nbytes += roundup(ip->i_df.if_bytes, 4); + *nvecs += 1; + } break; case XFS_DINODE_FMT_DEV: @@ -85,7 +97,7 @@ xfs_inode_item_size( } if (!XFS_IFORK_Q(ip)) - return nvecs; + return; /* @@ -95,28 +107,33 @@ xfs_inode_item_size( case XFS_DINODE_FMT_EXTENTS: if ((iip->ili_fields & XFS_ILOG_AEXT) && ip->i_d.di_anextents > 0 && - ip->i_afp->if_bytes > 0) - nvecs++; + ip->i_afp->if_bytes > 0) { + /* worst case, doesn't subtract unused space */ + *nbytes += XFS_IFORK_ASIZE(ip); + *nvecs += 1; + } break; case XFS_DINODE_FMT_BTREE: if ((iip->ili_fields & XFS_ILOG_ABROOT) && - ip->i_afp->if_broot_bytes > 0) - nvecs++; + ip->i_afp->if_broot_bytes > 0) { + *nbytes += ip->i_afp->if_broot_bytes; + *nvecs += 1; + } break; case XFS_DINODE_FMT_LOCAL: if ((iip->ili_fields & XFS_ILOG_ADATA) && - ip->i_afp->if_bytes > 0) - nvecs++; + ip->i_afp->if_bytes > 0) { + *nbytes += roundup(ip->i_afp->if_bytes, 4); + *nvecs += 1; + } break; default: ASSERT(0); break; } - - return nvecs; } /* |
