diff options
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_aops.c | 53 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_aops.h | 2 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_iops.c | 2 |
3 files changed, 26 insertions, 31 deletions
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c index 62b4553fb60..6cbbd165c60 100644 --- a/fs/xfs/linux-2.6/xfs_aops.c +++ b/fs/xfs/linux-2.6/xfs_aops.c @@ -1223,10 +1223,9 @@ free_buffers: } STATIC int -__xfs_get_block( +__xfs_get_blocks( struct inode *inode, sector_t iblock, - unsigned long blocks, struct buffer_head *bh_result, int create, int direct, @@ -1236,22 +1235,17 @@ __xfs_get_block( xfs_iomap_t iomap; xfs_off_t offset; ssize_t size; - int retpbbm = 1; + int niomap = 1; int error; offset = (xfs_off_t)iblock << inode->i_blkbits; - if (blocks) - size = (ssize_t) min_t(xfs_off_t, LONG_MAX, - (xfs_off_t)blocks << inode->i_blkbits); - else - size = 1 << inode->i_blkbits; - + ASSERT(bh_result->b_size >= (1 << inode->i_blkbits)); + size = bh_result->b_size; VOP_BMAP(vp, offset, size, - create ? flags : BMAPI_READ, &iomap, &retpbbm, error); + create ? flags : BMAPI_READ, &iomap, &niomap, error); if (error) return -error; - - if (retpbbm == 0) + if (niomap == 0) return 0; if (iomap.iomap_bn != IOMAP_DADDR_NULL) { @@ -1271,12 +1265,16 @@ __xfs_get_block( } } - /* If this is a realtime file, data might be on a new device */ + /* + * If this is a realtime file, data may be on a different device. + * to that pointed to from the buffer_head b_bdev currently. + */ bh_result->b_bdev = iomap.iomap_target->bt_bdev; - /* If we previously allocated a block out beyond eof and - * we are now coming back to use it then we will need to - * flag it as new even if it has a disk address. + /* + * If we previously allocated a block out beyond eof and we are + * now coming back to use it then we will need to flag it as new + * even if it has a disk address. */ if (create && ((!buffer_mapped(bh_result) && !buffer_uptodate(bh_result)) || @@ -1292,26 +1290,24 @@ __xfs_get_block( } } - if (blocks) { + if (direct || size > (1 << inode->i_blkbits)) { ASSERT(iomap.iomap_bsize - iomap.iomap_delta > 0); offset = min_t(xfs_off_t, - iomap.iomap_bsize - iomap.iomap_delta, - (xfs_off_t)blocks << inode->i_blkbits); - bh_result->b_size = (u32) min_t(xfs_off_t, UINT_MAX, offset); + iomap.iomap_bsize - iomap.iomap_delta, size); + bh_result->b_size = (ssize_t)min_t(xfs_off_t, LONG_MAX, offset); } return 0; } int -xfs_get_block( +xfs_get_blocks( struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create) { - return __xfs_get_block(inode, iblock, - bh_result->b_size >> inode->i_blkbits, + return __xfs_get_blocks(inode, iblock, bh_result, create, 0, BMAPI_WRITE); } @@ -1322,8 +1318,7 @@ xfs_get_blocks_direct( struct buffer_head *bh_result, int create) { - return __xfs_get_block(inode, iblock, - bh_result->b_size >> inode->i_blkbits, + return __xfs_get_blocks(inode, iblock, bh_result, create, 1, BMAPI_WRITE|BMAPI_DIRECT); } @@ -1405,7 +1400,7 @@ xfs_vm_prepare_write( unsigned int from, unsigned int to) { - return block_prepare_write(page, from, to, xfs_get_block); + return block_prepare_write(page, from, to, xfs_get_blocks); } STATIC sector_t @@ -1422,7 +1417,7 @@ xfs_vm_bmap( VOP_RWLOCK(vp, VRWLOCK_READ); VOP_FLUSH_PAGES(vp, (xfs_off_t)0, -1, 0, FI_REMAPF, error); VOP_RWUNLOCK(vp, VRWLOCK_READ); - return generic_block_bmap(mapping, block, xfs_get_block); + return generic_block_bmap(mapping, block, xfs_get_blocks); } STATIC int @@ -1430,7 +1425,7 @@ xfs_vm_readpage( struct file *unused, struct page *page) { - return mpage_readpage(page, xfs_get_block); + return mpage_readpage(page, xfs_get_blocks); } STATIC int @@ -1440,7 +1435,7 @@ xfs_vm_readpages( struct list_head *pages, unsigned nr_pages) { - return mpage_readpages(mapping, pages, nr_pages, xfs_get_block); + return mpage_readpages(mapping, pages, nr_pages, xfs_get_blocks); } STATIC void diff --git a/fs/xfs/linux-2.6/xfs_aops.h b/fs/xfs/linux-2.6/xfs_aops.h index 795699f121d..60716543c68 100644 --- a/fs/xfs/linux-2.6/xfs_aops.h +++ b/fs/xfs/linux-2.6/xfs_aops.h @@ -41,6 +41,6 @@ typedef struct xfs_ioend { } xfs_ioend_t; extern struct address_space_operations xfs_address_space_operations; -extern int xfs_get_block(struct inode *, sector_t, struct buffer_head *, int); +extern int xfs_get_blocks(struct inode *, sector_t, struct buffer_head *, int); #endif /* __XFS_IOPS_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index af487437bd7..149237304fb 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -708,7 +708,7 @@ STATIC void xfs_vn_truncate( struct inode *inode) { - block_truncate_page(inode->i_mapping, inode->i_size, xfs_get_block); + block_truncate_page(inode->i_mapping, inode->i_size, xfs_get_blocks); } STATIC int |