diff options
| -rw-r--r-- | fs/xfs/xfs_attr_remote.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/fs/xfs/xfs_attr_remote.c b/fs/xfs/xfs_attr_remote.c index e207bf0004b6..d8bcb2d742d1 100644 --- a/fs/xfs/xfs_attr_remote.c +++ b/fs/xfs/xfs_attr_remote.c @@ -468,19 +468,25 @@ xfs_attr_rmtval_remove(xfs_da_args_t *args) mp = args->dp->i_mount; /* - * Roll through the "value", invalidating the attribute value's - * blocks. + * Roll through the "value", invalidating the attribute value's blocks. + * Note that args->rmtblkcnt is the minimum number of data blocks we'll + * see for a CRC enabled remote attribute. Each extent will have a + * header, and so we may have more blocks than we realise here. If we + * fail to map the blocks correctly, we'll have problems with the buffer + * lookups. */ lblkno = args->rmtblkno; - valuelen = args->rmtblkcnt; + valuelen = args->valuelen; + blkcnt = xfs_attr3_rmt_blocks(mp, valuelen); while (valuelen > 0) { + int dblkcnt; + /* * Try to remember where we decided to put the value. */ nmap = 1; error = xfs_bmapi_read(args->dp, (xfs_fileoff_t)lblkno, - args->rmtblkcnt, &map, &nmap, - XFS_BMAPI_ATTRFORK); + blkcnt, &map, &nmap, XFS_BMAPI_ATTRFORK); if (error) return(error); ASSERT(nmap == 1); @@ -488,28 +494,31 @@ xfs_attr_rmtval_remove(xfs_da_args_t *args) (map.br_startblock != HOLESTARTBLOCK)); dblkno = XFS_FSB_TO_DADDR(mp, map.br_startblock), - blkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount); + dblkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount); /* * If the "remote" value is in the cache, remove it. */ - bp = xfs_incore(mp->m_ddev_targp, dblkno, blkcnt, XBF_TRYLOCK); + bp = xfs_incore(mp->m_ddev_targp, dblkno, dblkcnt, XBF_TRYLOCK); if (bp) { xfs_buf_stale(bp); xfs_buf_relse(bp); bp = NULL; } - valuelen -= map.br_blockcount; + valuelen -= XFS_ATTR3_RMT_BUF_SPACE(mp, + XFS_FSB_TO_B(mp, map.br_blockcount)); lblkno += map.br_blockcount; + blkcnt -= map.br_blockcount; + blkcnt = max(blkcnt, xfs_attr3_rmt_blocks(mp, valuelen)); } /* * Keep de-allocating extents until the remote-value region is gone. */ + blkcnt = lblkno - args->rmtblkno; lblkno = args->rmtblkno; - blkcnt = args->rmtblkcnt; done = 0; while (!done) { xfs_bmap_init(args->flist, args->firstblock); |