diff options
author | Darrick J. Wong <darrick.wong@oracle.com> | 2020-01-14 14:31:49 -0800 |
---|---|---|
committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-01-16 08:07:23 -0800 |
commit | 0bb9d159bd018b271e783d3b2d3bc82fa0727321 (patch) | |
tree | b46adf4937b198357d225c4f33caee8cff69af07 /fs/xfs/xfs_attr_inactive.c | |
parent | e8db2aafcedb7d88320ab83f1000f1606b26d4d7 (diff) | |
download | linux-0bb9d159bd018b271e783d3b2d3bc82fa0727321.tar.bz2 |
xfs: streamline xfs_attr3_leaf_inactive
Now that we know we don't have to take a transaction to stale the incore
buffers for a remote value, get rid of the unnecessary memory allocation
in the leaf walker and call the rmt_stale function directly. Flatten
the loop while we're at it.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/xfs_attr_inactive.c')
-rw-r--r-- | fs/xfs/xfs_attr_inactive.c | 101 |
1 files changed, 29 insertions, 72 deletions
diff --git a/fs/xfs/xfs_attr_inactive.c b/fs/xfs/xfs_attr_inactive.c index edb079087a0c..c75840a9e478 100644 --- a/fs/xfs/xfs_attr_inactive.c +++ b/fs/xfs/xfs_attr_inactive.c @@ -37,8 +37,6 @@ xfs_attr3_rmt_stale( int blkcnt) { struct xfs_bmbt_irec map; - xfs_dablk_t tblkno; - int tblkcnt; int nmap; int error; @@ -46,14 +44,12 @@ xfs_attr3_rmt_stale( * Roll through the "value", invalidating the attribute value's * blocks. */ - tblkno = blkno; - tblkcnt = blkcnt; - while (tblkcnt > 0) { + while (blkcnt > 0) { /* * Try to remember where we decided to put the value. */ nmap = 1; - error = xfs_bmapi_read(dp, (xfs_fileoff_t)tblkno, tblkcnt, + error = xfs_bmapi_read(dp, (xfs_fileoff_t)blkno, blkcnt, &map, &nmap, XFS_BMAPI_ATTRFORK); if (error) return error; @@ -69,8 +65,8 @@ xfs_attr3_rmt_stale( if (error) return error; - tblkno += map.br_blockcount; - tblkcnt -= map.br_blockcount; + blkno += map.br_blockcount; + blkcnt -= map.br_blockcount; } return 0; @@ -84,84 +80,45 @@ xfs_attr3_rmt_stale( */ STATIC int xfs_attr3_leaf_inactive( - struct xfs_trans **trans, - struct xfs_inode *dp, - struct xfs_buf *bp) + struct xfs_trans **trans, + struct xfs_inode *dp, + struct xfs_buf *bp) { - struct xfs_attr_leafblock *leaf; - struct xfs_attr3_icleaf_hdr ichdr; - struct xfs_attr_leaf_entry *entry; + struct xfs_attr3_icleaf_hdr ichdr; + struct xfs_mount *mp = bp->b_mount; + struct xfs_attr_leafblock *leaf = bp->b_addr; + struct xfs_attr_leaf_entry *entry; struct xfs_attr_leaf_name_remote *name_rmt; - struct xfs_attr_inactive_list *list; - struct xfs_attr_inactive_list *lp; - int error; - int count; - int size; - int tmp; - int i; - struct xfs_mount *mp = bp->b_mount; + int error; + int i; - leaf = bp->b_addr; xfs_attr3_leaf_hdr_from_disk(mp->m_attr_geo, &ichdr, leaf); /* - * Count the number of "remote" value extents. + * Find the remote value extents for this leaf and invalidate their + * incore buffers. */ - count = 0; entry = xfs_attr3_leaf_entryp(leaf); for (i = 0; i < ichdr.count; entry++, i++) { - if (be16_to_cpu(entry->nameidx) && - ((entry->flags & XFS_ATTR_LOCAL) == 0)) { - name_rmt = xfs_attr3_leaf_name_remote(leaf, i); - if (name_rmt->valueblk) - count++; - } - } - - /* - * If there are no "remote" values, we're done. - */ - if (count == 0) { - xfs_trans_brelse(*trans, bp); - return 0; - } + int blkcnt; - /* - * Allocate storage for a list of all the "remote" value extents. - */ - size = count * sizeof(xfs_attr_inactive_list_t); - list = kmem_alloc(size, 0); + if (!entry->nameidx || (entry->flags & XFS_ATTR_LOCAL)) + continue; - /* - * Identify each of the "remote" value extents. - */ - lp = list; - entry = xfs_attr3_leaf_entryp(leaf); - for (i = 0; i < ichdr.count; entry++, i++) { - if (be16_to_cpu(entry->nameidx) && - ((entry->flags & XFS_ATTR_LOCAL) == 0)) { - name_rmt = xfs_attr3_leaf_name_remote(leaf, i); - if (name_rmt->valueblk) { - lp->valueblk = be32_to_cpu(name_rmt->valueblk); - lp->valuelen = xfs_attr3_rmt_blocks(dp->i_mount, - be32_to_cpu(name_rmt->valuelen)); - lp++; - } - } - } - xfs_trans_brelse(*trans, bp); /* unlock for trans. in freextent() */ + name_rmt = xfs_attr3_leaf_name_remote(leaf, i); + if (!name_rmt->valueblk) + continue; - /* - * Invalidate each of the "remote" value extents. - */ - error = 0; - for (lp = list, i = 0; i < count; i++, lp++) { - tmp = xfs_attr3_rmt_stale(dp, lp->valueblk, lp->valuelen); - if (error == 0) - error = tmp; /* save only the 1st errno */ + blkcnt = xfs_attr3_rmt_blocks(dp->i_mount, + be32_to_cpu(name_rmt->valuelen)); + error = xfs_attr3_rmt_stale(dp, + be32_to_cpu(name_rmt->valueblk), blkcnt); + if (error) + goto err; } - kmem_free(list); + xfs_trans_brelse(*trans, bp); +err: return error; } |