Lines Matching +full:ip +full:- +full:block
1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
33 * block is 512, so __u16 is fine for that. It saves stack space to
43 static int punch_hole(struct gfs2_inode *ip, u64 offset, u64 length);
46 * gfs2_unstuffer_page - unstuff a stuffed inode into a block cached by a page
47 * @ip: the inode
49 * @block: the block number that was allocated
55 static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh, in gfs2_unstuffer_page() argument
56 u64 block, struct page *page) in gfs2_unstuffer_page() argument
58 struct inode *inode = &ip->i_inode; in gfs2_unstuffer_page()
64 memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode), dsize); in gfs2_unstuffer_page()
65 memset(kaddr + dsize, 0, PAGE_SIZE - dsize); in gfs2_unstuffer_page()
71 if (gfs2_is_jdata(ip)) { in gfs2_unstuffer_page()
75 create_empty_buffers(page, BIT(inode->i_blkbits), in gfs2_unstuffer_page()
80 map_bh(bh, inode->i_sb, block); in gfs2_unstuffer_page()
83 gfs2_trans_add_data(ip->i_gl, bh); in gfs2_unstuffer_page()
86 gfs2_ordered_add_inode(ip); in gfs2_unstuffer_page()
92 static int __gfs2_unstuff_inode(struct gfs2_inode *ip, struct page *page) in __gfs2_unstuff_inode() argument
96 u64 block = 0; in __gfs2_unstuff_inode() local
97 int isdir = gfs2_is_dir(ip); in __gfs2_unstuff_inode()
100 error = gfs2_meta_inode_buffer(ip, &dibh); in __gfs2_unstuff_inode()
104 if (i_size_read(&ip->i_inode)) { in __gfs2_unstuff_inode()
105 /* Get a free block, fill it with the stuffed data, in __gfs2_unstuff_inode()
109 error = gfs2_alloc_blocks(ip, &block, &n, 0); in __gfs2_unstuff_inode()
113 gfs2_trans_remove_revoke(GFS2_SB(&ip->i_inode), block, 1); in __gfs2_unstuff_inode()
114 error = gfs2_dir_get_new_buffer(ip, block, &bh); in __gfs2_unstuff_inode()
121 error = gfs2_unstuffer_page(ip, dibh, block, page); in __gfs2_unstuff_inode()
127 /* Set up the pointer to the new block */ in __gfs2_unstuff_inode()
129 gfs2_trans_add_meta(ip->i_gl, dibh); in __gfs2_unstuff_inode()
130 di = (struct gfs2_dinode *)dibh->b_data; in __gfs2_unstuff_inode()
133 if (i_size_read(&ip->i_inode)) { in __gfs2_unstuff_inode()
134 *(__be64 *)(di + 1) = cpu_to_be64(block); in __gfs2_unstuff_inode()
135 gfs2_add_inode_blocks(&ip->i_inode, 1); in __gfs2_unstuff_inode()
136 di->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode)); in __gfs2_unstuff_inode()
139 ip->i_height = 1; in __gfs2_unstuff_inode()
140 di->di_height = cpu_to_be16(1); in __gfs2_unstuff_inode()
148 * gfs2_unstuff_dinode - Unstuff a dinode when the data has grown too big
149 * @ip: The GFS2 inode to unstuff
157 int gfs2_unstuff_dinode(struct gfs2_inode *ip) in gfs2_unstuff_dinode() argument
159 struct inode *inode = &ip->i_inode; in gfs2_unstuff_dinode()
163 down_write(&ip->i_rw_mutex); in gfs2_unstuff_dinode()
164 page = grab_cache_page(inode->i_mapping, 0); in gfs2_unstuff_dinode()
165 error = -ENOMEM; in gfs2_unstuff_dinode()
168 error = __gfs2_unstuff_inode(ip, page); in gfs2_unstuff_dinode()
172 up_write(&ip->i_rw_mutex); in gfs2_unstuff_dinode()
177 * find_metapath - Find path through the metadata tree
179 * @block: The disk block to look up
181 * @height: The pre-calculated height of the metadata tree
184 * through the metadata of inode "ip" to get to block "block".
187 * Given: "ip" is a height 3 file, "offset" is 101342453, and this is a
193 * That means that in order to get to the block containing the byte at
194 * offset 101342453, we would load the indirect block pointed to by pointer
195 * 0 in the dinode. We would then load the indirect block pointed to by
196 * pointer 48 in that indirect block. We would then load the data block
197 * pointed to by pointer 165 in that indirect block.
199 * ----------------------------------------
204 * ----------------------------------------
208 * ----------------------------------------
209 * | Indirect Block |
213 * ----------------------------------------
217 * ----------------------------------------
218 * | Indirect Block |
222 * ----------------------------------------
226 * ----------------------------------------
227 * | Data block containing offset |
231 * ----------------------------------------
235 static void find_metapath(const struct gfs2_sbd *sdp, u64 block, in find_metapath() argument
240 mp->mp_fheight = height; in find_metapath()
241 for (i = height; i--;) in find_metapath()
242 mp->mp_list[i] = do_div(block, sdp->sd_inptrs); in find_metapath()
247 if (mp->mp_list[0] == 0) in metapath_branch_start()
253 * metaptr1 - Return the first possible metadata pointer in a metapath buffer
259 struct buffer_head *bh = mp->mp_bh[height]; in metaptr1()
261 return ((__be64 *)(bh->b_data + sizeof(struct gfs2_dinode))); in metaptr1()
262 return ((__be64 *)(bh->b_data + sizeof(struct gfs2_meta_header))); in metaptr1()
266 * metapointer - Return pointer to start of metadata in a buffer
270 * Return a pointer to the block number of the next height of the metadata
278 return p + mp->mp_list[height]; in metapointer()
283 const struct buffer_head *bh = mp->mp_bh[height]; in metaend()
284 return (const __be64 *)(bh->b_data + bh->b_size); in metaend()
292 for (hgt = 0; hgt < mp->mp_aheight; hgt++) in clone_metapath()
293 get_bh(clone->mp_bh[hgt]); in clone_metapath()
309 rabh->b_end_io = end_buffer_read_sync; in gfs2_metapath_ra()
320 static int __fillup_metapath(struct gfs2_inode *ip, struct metapath *mp, in __fillup_metapath() argument
330 ret = gfs2_meta_buffer(ip, GFS2_METATYPE_IN, dblock, &mp->mp_bh[x + 1]); in __fillup_metapath()
334 mp->mp_aheight = x + 1; in __fillup_metapath()
339 * lookup_metapath - Walk the metadata tree to a specific point
340 * @ip: The inode
344 * hooked onto mp->mp_bh[0] and that the metapath has been initialised
349 * at which it found the unallocated block. Blocks which are found are
350 * added to the mp->mp_bh[] list.
355 static int lookup_metapath(struct gfs2_inode *ip, struct metapath *mp) in lookup_metapath() argument
357 return __fillup_metapath(ip, mp, 0, ip->i_height - 1); in lookup_metapath()
361 * fillup_metapath - fill up buffers for the metadata path to a specific height
362 * @ip: The inode
371 static int fillup_metapath(struct gfs2_inode *ip, struct metapath *mp, int h) in fillup_metapath() argument
378 for (x = h - 1; x > 0; x--) { in fillup_metapath()
379 if (mp->mp_bh[x]) in fillup_metapath()
383 ret = __fillup_metapath(ip, mp, x, h); in fillup_metapath()
386 return mp->mp_aheight - x - 1; in fillup_metapath()
391 sector_t factor = 1, block = 0; in metapath_to_block() local
394 for (hgt = mp->mp_fheight - 1; hgt >= 0; hgt--) { in metapath_to_block()
395 if (hgt < mp->mp_aheight) in metapath_to_block()
396 block += mp->mp_list[hgt] * factor; in metapath_to_block()
397 factor *= sdp->sd_inptrs; in metapath_to_block()
399 return block; in metapath_to_block()
407 if (mp->mp_bh[i] == NULL) in release_metapath()
409 brelse(mp->mp_bh[i]); in release_metapath()
410 mp->mp_bh[i] = NULL; in release_metapath()
415 * gfs2_extent_length - Returns length of an extent of blocks
416 * @bh: The metadata block
419 * @eob: Set to 1 if we hit "end of block"
421 * Returns: The length of the extent (minimum of one block)
426 const __be64 *end = (__be64 *)(bh->b_data + bh->b_size); in gfs2_extent_length()
439 return ptr - first; in gfs2_extent_length()
445 * gfs2_metadata_walker - walk an indirect block
446 * @mp: Metapath to indirect block
450 * indirect block to follow.
456 * gfs2_walk_metadata - walk a tree of indirect blocks
469 struct gfs2_inode *ip = GFS2_I(inode); in gfs2_walk_metadata() local
476 * The walk starts in the lowest allocated indirect block, which may be in gfs2_walk_metadata()
480 for (hgt = mp->mp_fheight - 1; hgt >= mp->mp_aheight; hgt--) { in gfs2_walk_metadata()
481 max_len += mp->mp_list[hgt] * factor; in gfs2_walk_metadata()
482 mp->mp_list[hgt] = 0; in gfs2_walk_metadata()
483 factor *= sdp->sd_inptrs; in gfs2_walk_metadata()
487 u16 start = mp->mp_list[hgt]; in gfs2_walk_metadata()
492 /* Walk indirect block. */ in gfs2_walk_metadata()
493 ptrs = (hgt >= 1 ? sdp->sd_inptrs : sdp->sd_diptrs) - start; in gfs2_walk_metadata()
502 BUG_ON(mp->mp_aheight == mp->mp_fheight); in gfs2_walk_metadata()
503 ptrs = mp->mp_list[hgt] - start; in gfs2_walk_metadata()
511 max_len -= len; in gfs2_walk_metadata()
517 brelse(mp->mp_bh[hgt]); in gfs2_walk_metadata()
518 mp->mp_bh[hgt] = NULL; in gfs2_walk_metadata()
519 mp->mp_list[hgt] = 0; in gfs2_walk_metadata()
522 hgt--; in gfs2_walk_metadata()
523 factor *= sdp->sd_inptrs; in gfs2_walk_metadata()
526 (mp->mp_list[hgt])++; in gfs2_walk_metadata()
528 if (mp->mp_list[hgt] >= sdp->sd_inptrs) in gfs2_walk_metadata()
531 if (mp->mp_list[hgt] >= sdp->sd_diptrs) in gfs2_walk_metadata()
537 ret = fillup_metapath(ip, mp, ip->i_height - 1); in gfs2_walk_metadata()
541 for (; ret; ret--) in gfs2_walk_metadata()
542 do_div(factor, sdp->sd_inptrs); in gfs2_walk_metadata()
543 mp->mp_aheight = hgt + 1; in gfs2_walk_metadata()
554 hgt = mp->mp_aheight - 1; in gfs2_hole_walker()
560 mp->mp_list[hgt] += ptr - start; in gfs2_hole_walker()
561 if (mp->mp_aheight == mp->mp_fheight) in gfs2_hole_walker()
570 * gfs2_hole_size - figure out the size of a hole
572 * @lblock: The logical starting block number
594 hole_size = metapath_to_block(GFS2_SB(inode), &clone) - lblock; in gfs2_hole_size()
597 iomap->length = hole_size << inode->i_blkbits; in gfs2_hole_size()
609 __be64 *ptr = (__be64 *)(mp->mp_bh[i - 1]->b_data + in gfs2_indirect_init()
613 BUG_ON(mp->mp_bh[i] != NULL); in gfs2_indirect_init()
614 mp->mp_bh[i] = gfs2_meta_new(gl, bn); in gfs2_indirect_init()
615 gfs2_trans_add_meta(gl, mp->mp_bh[i]); in gfs2_indirect_init()
616 gfs2_metatype_set(mp->mp_bh[i], GFS2_METATYPE_IN, GFS2_FORMAT_IN); in gfs2_indirect_init()
617 gfs2_buffer_clear_tail(mp->mp_bh[i], sizeof(struct gfs2_meta_header)); in gfs2_indirect_init()
630 * __gfs2_iomap_alloc - Build a metadata tree of the requested height
648 * Right now, this function will allocate at most one indirect block
649 * worth of data -- with a default block size of 4K, that's slightly
661 struct gfs2_inode *ip = GFS2_I(inode); in __gfs2_iomap_alloc() local
663 struct buffer_head *dibh = mp->mp_bh[0]; in __gfs2_iomap_alloc()
666 size_t dblks = iomap->length >> inode->i_blkbits; in __gfs2_iomap_alloc()
667 const unsigned end_of_metadata = mp->mp_fheight - 1; in __gfs2_iomap_alloc()
673 BUG_ON(mp->mp_aheight < 1); in __gfs2_iomap_alloc()
677 gfs2_trans_add_meta(ip->i_gl, dibh); in __gfs2_iomap_alloc()
679 down_write(&ip->i_rw_mutex); in __gfs2_iomap_alloc()
681 if (mp->mp_fheight == mp->mp_aheight) { in __gfs2_iomap_alloc()
682 /* Bottom indirect block exists */ in __gfs2_iomap_alloc()
686 if (mp->mp_fheight == ip->i_height) { in __gfs2_iomap_alloc()
688 iblks = mp->mp_fheight - mp->mp_aheight; in __gfs2_iomap_alloc()
693 iblks = mp->mp_fheight - ip->i_height; in __gfs2_iomap_alloc()
695 iblks += (mp->mp_fheight - branch_start); in __gfs2_iomap_alloc()
702 i = mp->mp_aheight; in __gfs2_iomap_alloc()
704 n = blks - alloced; in __gfs2_iomap_alloc()
705 ret = gfs2_alloc_blocks(ip, &bn, &n, 0); in __gfs2_iomap_alloc()
709 if (state != ALLOC_DATA || gfs2_is_jdata(ip)) in __gfs2_iomap_alloc()
715 ptr = (__be64 *)(dibh->b_data + in __gfs2_iomap_alloc()
719 for (; i - 1 < mp->mp_fheight - ip->i_height && n > 0; in __gfs2_iomap_alloc()
720 i++, n--) in __gfs2_iomap_alloc()
721 gfs2_indirect_init(mp, ip->i_gl, i, 0, bn++); in __gfs2_iomap_alloc()
722 if (i - 1 == mp->mp_fheight - ip->i_height) { in __gfs2_iomap_alloc()
723 i--; in __gfs2_iomap_alloc()
724 gfs2_buffer_copy_tail(mp->mp_bh[i], in __gfs2_iomap_alloc()
730 ptr = (__be64 *)(mp->mp_bh[i]->b_data + in __gfs2_iomap_alloc()
734 for(i = branch_start; i < mp->mp_fheight; i++) { in __gfs2_iomap_alloc()
735 if (mp->mp_bh[i] == NULL) in __gfs2_iomap_alloc()
737 brelse(mp->mp_bh[i]); in __gfs2_iomap_alloc()
738 mp->mp_bh[i] = NULL; in __gfs2_iomap_alloc()
746 if (i > 1 && i < mp->mp_fheight) in __gfs2_iomap_alloc()
747 gfs2_trans_add_meta(ip->i_gl, mp->mp_bh[i-1]); in __gfs2_iomap_alloc()
748 for (; i < mp->mp_fheight && n > 0; i++, n--) in __gfs2_iomap_alloc()
749 gfs2_indirect_init(mp, ip->i_gl, i, in __gfs2_iomap_alloc()
750 mp->mp_list[i-1], bn++); in __gfs2_iomap_alloc()
751 if (i == mp->mp_fheight) in __gfs2_iomap_alloc()
758 BUG_ON(mp->mp_bh[end_of_metadata] == NULL); in __gfs2_iomap_alloc()
759 gfs2_trans_add_meta(ip->i_gl, mp->mp_bh[end_of_metadata]); in __gfs2_iomap_alloc()
762 iomap->addr = bn << inode->i_blkbits; in __gfs2_iomap_alloc()
763 iomap->flags |= IOMAP_F_MERGED | IOMAP_F_NEW; in __gfs2_iomap_alloc()
764 while (n-- > 0) in __gfs2_iomap_alloc()
768 } while (iomap->addr == IOMAP_NULL_ADDR); in __gfs2_iomap_alloc()
770 iomap->type = IOMAP_MAPPED; in __gfs2_iomap_alloc()
771 iomap->length = (u64)dblks << inode->i_blkbits; in __gfs2_iomap_alloc()
772 ip->i_height = mp->mp_fheight; in __gfs2_iomap_alloc()
773 gfs2_add_inode_blocks(&ip->i_inode, alloced); in __gfs2_iomap_alloc()
774 gfs2_dinode_out(ip, dibh->b_data); in __gfs2_iomap_alloc()
776 up_write(&ip->i_rw_mutex); in __gfs2_iomap_alloc()
783 * gfs2_alloc_size - Compute the maximum allocation size
794 struct gfs2_inode *ip = GFS2_I(inode); in gfs2_alloc_size() local
806 if (gfs2_is_stuffed(ip) || mp->mp_fheight != mp->mp_aheight) { in gfs2_alloc_size()
807 unsigned int maxsize = mp->mp_fheight > 1 ? in gfs2_alloc_size()
808 sdp->sd_inptrs : sdp->sd_diptrs; in gfs2_alloc_size()
809 maxsize -= mp->mp_list[mp->mp_fheight - 1]; in gfs2_alloc_size()
815 first = metapointer(ip->i_height - 1, mp); in gfs2_alloc_size()
816 end = metaend(ip->i_height - 1, mp); in gfs2_alloc_size()
817 if (end - first > size) in gfs2_alloc_size()
823 return ptr - first; in gfs2_alloc_size()
827 * __gfs2_iomap_get - Map blocks from an inode to disk blocks
841 struct gfs2_inode *ip = GFS2_I(inode); in __gfs2_iomap_get() local
854 return -EINVAL; in __gfs2_iomap_get()
856 down_read(&ip->i_rw_mutex); in __gfs2_iomap_get()
858 ret = gfs2_meta_inode_buffer(ip, &dibh); in __gfs2_iomap_get()
861 mp->mp_bh[0] = dibh; in __gfs2_iomap_get()
863 if (gfs2_is_stuffed(ip)) { in __gfs2_iomap_get()
865 loff_t max_size = gfs2_max_stuffed_size(ip); in __gfs2_iomap_get()
869 iomap->length = max_size; in __gfs2_iomap_get()
873 ret = -ENOENT; in __gfs2_iomap_get()
876 iomap->offset = pos; in __gfs2_iomap_get()
877 iomap->length = length; in __gfs2_iomap_get()
881 iomap->length = size; in __gfs2_iomap_get()
883 iomap->addr = (ip->i_no_addr << inode->i_blkbits) + in __gfs2_iomap_get()
885 iomap->type = IOMAP_INLINE; in __gfs2_iomap_get()
886 iomap->inline_data = dibh->b_data + sizeof(struct gfs2_dinode); in __gfs2_iomap_get()
891 lblock = pos >> inode->i_blkbits; in __gfs2_iomap_get()
892 iomap->offset = lblock << inode->i_blkbits; in __gfs2_iomap_get()
893 lblock_stop = (pos + length - 1) >> inode->i_blkbits; in __gfs2_iomap_get()
894 len = lblock_stop - lblock + 1; in __gfs2_iomap_get()
895 iomap->length = len << inode->i_blkbits; in __gfs2_iomap_get()
897 height = ip->i_height; in __gfs2_iomap_get()
898 while ((lblock + 1) * sdp->sd_sb.sb_bsize > sdp->sd_heightsize[height]) in __gfs2_iomap_get()
901 if (height > ip->i_height || gfs2_is_stuffed(ip)) in __gfs2_iomap_get()
904 ret = lookup_metapath(ip, mp); in __gfs2_iomap_get()
908 if (mp->mp_aheight != ip->i_height) in __gfs2_iomap_get()
911 ptr = metapointer(ip->i_height - 1, mp); in __gfs2_iomap_get()
915 bh = mp->mp_bh[ip->i_height - 1]; in __gfs2_iomap_get()
918 iomap->addr = be64_to_cpu(*ptr) << inode->i_blkbits; in __gfs2_iomap_get()
919 iomap->length = len << inode->i_blkbits; in __gfs2_iomap_get()
920 iomap->type = IOMAP_MAPPED; in __gfs2_iomap_get()
921 iomap->flags |= IOMAP_F_MERGED; in __gfs2_iomap_get()
923 iomap->flags |= IOMAP_F_GFS2_BOUNDARY; in __gfs2_iomap_get()
926 iomap->bdev = inode->i_sb->s_bdev; in __gfs2_iomap_get()
928 up_read(&ip->i_rw_mutex); in __gfs2_iomap_get()
934 ret = -ENOENT; in __gfs2_iomap_get()
935 else if (height == ip->i_height) in __gfs2_iomap_get()
938 iomap->length = size - iomap->offset; in __gfs2_iomap_get()
946 alloc_size = len << inode->i_blkbits; in __gfs2_iomap_get()
947 if (alloc_size < iomap->length) in __gfs2_iomap_get()
948 iomap->length = alloc_size; in __gfs2_iomap_get()
950 if (pos < size && height == ip->i_height) in __gfs2_iomap_get()
954 iomap->addr = IOMAP_NULL_ADDR; in __gfs2_iomap_get()
955 iomap->type = IOMAP_HOLE; in __gfs2_iomap_get()
962 struct inode *inode = iter->inode; in gfs2_iomap_get_folio()
963 unsigned int blockmask = i_blocksize(inode) - 1; in gfs2_iomap_get_folio()
969 blocks = ((pos & blockmask) + len + blockmask) >> inode->i_blkbits; in gfs2_iomap_get_folio()
983 struct gfs2_trans *tr = current->journal_info; in gfs2_iomap_put_folio()
984 struct gfs2_inode *ip = GFS2_I(inode); in gfs2_iomap_put_folio() local
987 if (!gfs2_is_stuffed(ip)) in gfs2_iomap_put_folio()
988 gfs2_trans_add_databufs(ip, folio, offset_in_folio(folio, pos), in gfs2_iomap_put_folio()
994 if (tr->tr_num_buf_new) in gfs2_iomap_put_folio()
1010 struct gfs2_inode *ip = GFS2_I(inode); in gfs2_iomap_begin_write() local
1015 unstuff = gfs2_is_stuffed(ip) && in gfs2_iomap_begin_write()
1016 pos + length > gfs2_max_stuffed_size(ip); in gfs2_iomap_begin_write()
1018 if (unstuff || iomap->type == IOMAP_HOLE) { in gfs2_iomap_begin_write()
1024 gfs2_write_calc_reserv(ip, iomap->length, &data_blocks, in gfs2_iomap_begin_write()
1027 ret = gfs2_quota_lock_check(ip, &ap); in gfs2_iomap_begin_write()
1031 ret = gfs2_inplace_reserve(ip, &ap); in gfs2_iomap_begin_write()
1036 if (gfs2_is_jdata(ip)) in gfs2_iomap_begin_write()
1040 if (inode == sdp->sd_rindex) in gfs2_iomap_begin_write()
1042 rblocks += gfs2_rg_blocks(ip, data_blocks + ind_blocks); in gfs2_iomap_begin_write()
1045 iomap->length >> inode->i_blkbits); in gfs2_iomap_begin_write()
1050 ret = gfs2_unstuff_dinode(ip); in gfs2_iomap_begin_write()
1054 ret = __gfs2_iomap_get(inode, iomap->offset, in gfs2_iomap_begin_write()
1055 iomap->length, flags, iomap, mp); in gfs2_iomap_begin_write()
1060 if (iomap->type == IOMAP_HOLE) { in gfs2_iomap_begin_write()
1064 gfs2_inplace_release(ip); in gfs2_iomap_begin_write()
1065 punch_hole(ip, iomap->offset, iomap->length); in gfs2_iomap_begin_write()
1070 tr = current->journal_info; in gfs2_iomap_begin_write()
1071 if (tr->tr_num_buf_new) in gfs2_iomap_begin_write()
1077 if (gfs2_is_stuffed(ip) || gfs2_is_jdata(ip)) in gfs2_iomap_begin_write()
1078 iomap->folio_ops = &gfs2_iomap_folio_ops; in gfs2_iomap_begin_write()
1084 gfs2_inplace_release(ip); in gfs2_iomap_begin_write()
1086 gfs2_quota_unlock(ip); in gfs2_iomap_begin_write()
1094 struct gfs2_inode *ip = GFS2_I(inode); in gfs2_iomap_begin() local
1098 if (gfs2_is_jdata(ip)) in gfs2_iomap_begin()
1099 iomap->flags |= IOMAP_F_BUFFER_HEAD; in gfs2_iomap_begin()
1101 trace_gfs2_iomap_start(ip, pos, length, flags); in gfs2_iomap_begin()
1113 if (iomap->type != IOMAP_MAPPED) in gfs2_iomap_begin()
1114 ret = -ENOTBLK; in gfs2_iomap_begin()
1119 if (iomap->type == IOMAP_HOLE) in gfs2_iomap_begin()
1130 trace_gfs2_iomap_end(ip, iomap, ret); in gfs2_iomap_begin()
1137 struct gfs2_inode *ip = GFS2_I(inode); in gfs2_iomap_end() local
1146 if (iomap->type == IOMAP_HOLE) in gfs2_iomap_end()
1153 if (!gfs2_is_stuffed(ip)) in gfs2_iomap_end()
1154 gfs2_ordered_add_inode(ip); in gfs2_iomap_end()
1156 if (inode == sdp->sd_rindex) in gfs2_iomap_end()
1159 gfs2_inplace_release(ip); in gfs2_iomap_end()
1161 if (ip->i_qadata && ip->i_qadata->qa_qd_num) in gfs2_iomap_end()
1162 gfs2_quota_unlock(ip); in gfs2_iomap_end()
1164 if (length != written && (iomap->flags & IOMAP_F_NEW)) { in gfs2_iomap_end()
1167 loff_t hend = iomap->offset + iomap->length; in gfs2_iomap_end()
1170 truncate_pagecache_range(inode, hstart, hend - 1); in gfs2_iomap_end()
1171 punch_hole(ip, hstart, hend - hstart); in gfs2_iomap_end()
1178 if (iomap->flags & IOMAP_F_SIZE_CHANGED) in gfs2_iomap_end()
1180 set_bit(GLF_DIRTY, &ip->i_gl->gl_flags); in gfs2_iomap_end()
1190 * gfs2_block_map - Map one or more blocks of an inode to a disk block
1192 * @lblock: The logical block number
1196 * The size of the requested mapping is defined in bh_map->b_size.
1198 * Clears buffer_mapped(bh_map) and leaves bh_map->b_size unchanged
1200 * bh_map->b_size to indicate the size of the mapping when @lblock and
1204 * before the next block can be mapped. Sets buffer_new() if new
1213 struct gfs2_inode *ip = GFS2_I(inode); in gfs2_block_map() local
1214 loff_t pos = (loff_t)lblock << inode->i_blkbits; in gfs2_block_map()
1215 loff_t length = bh_map->b_size; in gfs2_block_map()
1222 trace_gfs2_bmap(ip, bh_map, lblock, create, 1); in gfs2_block_map()
1231 if (iomap.length > bh_map->b_size) { in gfs2_block_map()
1232 iomap.length = bh_map->b_size; in gfs2_block_map()
1236 map_bh(bh_map, inode->i_sb, iomap.addr >> inode->i_blkbits); in gfs2_block_map()
1237 bh_map->b_size = iomap.length; in gfs2_block_map()
1244 trace_gfs2_bmap(ip, bh_map, lblock, create, ret); in gfs2_block_map()
1251 unsigned int blkbits = inode->i_blkbits; in gfs2_get_extent()
1261 return -EIO; in gfs2_get_extent()
1272 unsigned int blkbits = inode->i_blkbits; in gfs2_alloc_extent()
1282 return -EIO; in gfs2_alloc_extent()
1299 BUG_ON(current->journal_info); in gfs2_block_zero_range()
1306 * gfs2_journaled_truncate - Wrapper for truncate_pagecache for jdata files
1311 * With jdata files, we have to journal a revoke for each block which is
1319 u64 max_chunk = GFS2_JTRUNC_REVOKES * sdp->sd_vfs->s_blocksize; in gfs2_journaled_truncate()
1327 chunk = oldsize - newsize; in gfs2_journaled_truncate()
1333 chunk = offs + ((chunk - offs) & PAGE_MASK); in gfs2_journaled_truncate()
1335 truncate_pagecache(inode, oldsize - chunk); in gfs2_journaled_truncate()
1336 oldsize -= chunk; in gfs2_journaled_truncate()
1338 tr = current->journal_info; in gfs2_journaled_truncate()
1339 if (!test_bit(TR_TOUCHED, &tr->tr_flags)) in gfs2_journaled_truncate()
1353 struct gfs2_inode *ip = GFS2_I(inode); in trunc_start() local
1356 int journaled = gfs2_is_jdata(ip); in trunc_start()
1357 u64 oldsize = inode->i_size; in trunc_start()
1360 if (!gfs2_is_stuffed(ip)) { in trunc_start()
1362 unsigned int offs = newsize & (blocksize - 1); in trunc_start()
1365 blocksize - offs); in trunc_start()
1377 error = gfs2_meta_inode_buffer(ip, &dibh); in trunc_start()
1381 gfs2_trans_add_meta(ip->i_gl, dibh); in trunc_start()
1383 if (gfs2_is_stuffed(ip)) in trunc_start()
1386 ip->i_diskflags |= GFS2_DIF_TRUNC_IN_PROG; in trunc_start()
1389 ip->i_inode.i_mtime = inode_set_ctime_current(&ip->i_inode); in trunc_start()
1390 gfs2_dinode_out(ip, dibh->b_data); in trunc_start()
1399 if (current->journal_info) in trunc_start()
1422 if (!ret && iomap->type == IOMAP_HOLE) in gfs2_iomap_alloc()
1429 * sweep_bh_for_rgrps - find an rgrp in a meta buffer and free blocks therein
1430 * @ip: inode
1440 * block has references to multiple rgrps, we break it into individual
1445 * if we're interrupted by power-outages.
1450 static int sweep_bh_for_rgrps(struct gfs2_inode *ip, struct gfs2_holder *rd_gh, in sweep_bh_for_rgrps() argument
1454 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); in sweep_bh_for_rgrps()
1467 rgd = gfs2_glock2rgrp(rd_gh->gh_gl); in sweep_bh_for_rgrps()
1469 gfs2_glock_is_locked_by_me(rd_gh->gh_gl)); in sweep_bh_for_rgrps()
1488 ret = -EIO; in sweep_bh_for_rgrps()
1491 ret = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, in sweep_bh_for_rgrps()
1497 if (gfs2_rs_active(&ip->i_res) && in sweep_bh_for_rgrps()
1498 rgd == ip->i_res.rs_rgd) in sweep_bh_for_rgrps()
1499 gfs2_rs_deltree(&ip->i_res); in sweep_bh_for_rgrps()
1507 if (current->journal_info == NULL) { in sweep_bh_for_rgrps()
1510 jblocks_rqsted = rgd->rd_length + RES_DINODE + in sweep_bh_for_rgrps()
1512 isize_blks = gfs2_get_inode_blocks(&ip->i_inode); in sweep_bh_for_rgrps()
1513 if (isize_blks > atomic_read(&sdp->sd_log_thresh2)) in sweep_bh_for_rgrps()
1515 atomic_read(&sdp->sd_log_thresh2); in sweep_bh_for_rgrps()
1520 revokes += end - start; in sweep_bh_for_rgrps()
1521 else if (ip->i_depth) in sweep_bh_for_rgrps()
1522 revokes += sdp->sd_inptrs; in sweep_bh_for_rgrps()
1526 down_write(&ip->i_rw_mutex); in sweep_bh_for_rgrps()
1529 tr = current->journal_info; in sweep_bh_for_rgrps()
1530 if (tr->tr_num_buf_new + RES_STATFS + in sweep_bh_for_rgrps()
1531 RES_QUOTA >= atomic_read(&sdp->sd_log_thresh2)) { in sweep_bh_for_rgrps()
1537 to the transaction, we've already set some block in sweep_bh_for_rgrps()
1553 gfs2_trans_add_meta(ip->i_gl, bh); in sweep_bh_for_rgrps()
1561 __gfs2_free_blocks(ip, rgd, bstart, (u32)blen, meta); in sweep_bh_for_rgrps()
1563 gfs2_add_inode_blocks(&ip->i_inode, -blen); in sweep_bh_for_rgrps()
1569 __gfs2_free_blocks(ip, rgd, bstart, (u32)blen, meta); in sweep_bh_for_rgrps()
1571 gfs2_add_inode_blocks(&ip->i_inode, -blen); in sweep_bh_for_rgrps()
1574 if (!ret && blks_outside_rgrp) { /* If buffer still has non-zero blocks in sweep_bh_for_rgrps()
1577 if (current->journal_info) { in sweep_bh_for_rgrps()
1580 ret = gfs2_meta_inode_buffer(ip, &dibh); in sweep_bh_for_rgrps()
1586 ip->i_inode.i_mtime = inode_set_ctime_current(&ip->i_inode); in sweep_bh_for_rgrps()
1587 gfs2_trans_add_meta(ip->i_gl, dibh); in sweep_bh_for_rgrps()
1588 gfs2_dinode_out(ip, dibh->b_data); in sweep_bh_for_rgrps()
1590 up_write(&ip->i_rw_mutex); in sweep_bh_for_rgrps()
1604 if (memcmp(mp->mp_list, list, h * sizeof(mp->mp_list[0]))) in mp_eq_to_hgt()
1610 * find_nonnull_ptr - find a non-null pointer given a metapath and height
1618 * Returns: true if a non-null pointer was found in the metapath buffer
1625 struct buffer_head *bh = mp->mp_bh[h]; in find_nonnull_ptr()
1629 ptr = first + mp->mp_list[h]; in find_nonnull_ptr()
1630 end = (__be64 *)(bh->b_data + bh->b_size); in find_nonnull_ptr()
1637 if (*ptr) { /* if we have a non-null pointer */ in find_nonnull_ptr()
1638 mp->mp_list[h] = ptr - first; in find_nonnull_ptr()
1641 mp->mp_list[h] = 0; in find_nonnull_ptr()
1662 struct buffer_head *bh = mp->mp_bh[height]; in metapointer_range()
1671 *end = (__be64 *)(bh->b_data + bh->b_size); in metapointer_range()
1690 end = (height > 0) ? sdp->sd_inptrs : sdp->sd_diptrs; in walk_done()
1691 return mp->mp_list[height] >= end; in walk_done()
1695 * punch_hole - deallocate blocks in a file
1696 * @ip: inode to truncate
1710 static int punch_hole(struct gfs2_inode *ip, u64 offset, u64 length) in punch_hole() argument
1712 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); in punch_hole()
1713 u64 maxsize = sdp->sd_heightsize[ip->i_height]; in punch_hole()
1717 unsigned int bsize_shift = sdp->sd_sb.sb_bsize_shift; in punch_hole()
1719 u64 lblock = (offset + bsize - 1) >> bsize_shift; in punch_hole()
1723 unsigned int strip_h = ip->i_height - 1; in punch_hole()
1730 if (offset + bsize - 1 >= maxsize) { in punch_hole()
1766 find_metapath(sdp, lend, &mp, ip->i_height); in punch_hole()
1770 for (mp_h = ip->i_height - 1; mp_h > 0; mp_h--) { in punch_hole()
1777 find_metapath(sdp, lblock, &mp, ip->i_height); in punch_hole()
1780 for (mp_h = ip->i_height - 1; mp_h > 0; mp_h--) { in punch_hole()
1786 ret = gfs2_meta_inode_buffer(ip, &dibh); in punch_hole()
1791 ret = lookup_metapath(ip, &mp); in punch_hole()
1795 /* issue read-ahead on metadata */ in punch_hole()
1796 for (mp_h = 0; mp_h < mp.mp_aheight - 1; mp_h++) { in punch_hole()
1799 gfs2_metapath_ra(ip->i_gl, start, end); in punch_hole()
1802 if (mp.mp_aheight == ip->i_height) in punch_hole()
1811 ret = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE); in punch_hole()
1826 prev_bnr != bh->b_blocknr)) { in punch_hole()
1827 fs_emerg(sdp, "inode %llu, block:%llu, i_h:%u," in punch_hole()
1829 (unsigned long long)ip->i_no_addr, in punch_hole()
1830 prev_bnr, ip->i_height, strip_h, mp_h); in punch_hole()
1832 prev_bnr = bh->b_blocknr; in punch_hole()
1837 ret = -EIO; in punch_hole()
1850 ret = sweep_bh_for_rgrps(ip, &rd_gh, mp.mp_bh[mp_h], in punch_hole()
1852 mp_h != ip->i_height - 1, in punch_hole()
1877 strip_h--; in punch_hole()
1884 mp_h--; /* search one metadata height down */ in punch_hole()
1890 * next non-null pointer. */ in punch_hole()
1895 /* No more non-null pointers at this height. Back up in punch_hole()
1902 ret = fillup_metapath(ip, &mp, mp_h); in punch_hole()
1906 /* On the first pass, issue read-ahead on metadata. */ in punch_hole()
1907 if (mp.mp_aheight > 1 && strip_h == ip->i_height - 1) { in punch_hole()
1908 unsigned int height = mp.mp_aheight - 1; in punch_hole()
1910 /* No read-ahead for data blocks. */ in punch_hole()
1911 if (mp.mp_aheight - 1 == strip_h) in punch_hole()
1912 height--; in punch_hole()
1914 for (; height >= mp.mp_aheight - ret; height--) { in punch_hole()
1919 gfs2_metapath_ra(ip->i_gl, start, end); in punch_hole()
1924 if (mp.mp_aheight - 1 == strip_h) { in punch_hole()
1928 if (mp.mp_aheight < ip->i_height) /* We have a partial height */ in punch_hole()
1929 mp_h = mp.mp_aheight - 1; in punch_hole()
1931 /* If we find a non-null block pointer, crawl a bit in punch_hole()
1943 if (current->journal_info == NULL) { in punch_hole()
1948 down_write(&ip->i_rw_mutex); in punch_hole()
1951 gfs2_quota_change(ip, -(s64)btotal, ip->i_inode.i_uid, in punch_hole()
1952 ip->i_inode.i_gid); in punch_hole()
1953 ip->i_inode.i_mtime = inode_set_ctime_current(&ip->i_inode); in punch_hole()
1954 gfs2_trans_add_meta(ip->i_gl, dibh); in punch_hole()
1955 gfs2_dinode_out(ip, dibh->b_data); in punch_hole()
1956 up_write(&ip->i_rw_mutex); in punch_hole()
1963 if (current->journal_info) { in punch_hole()
1964 up_write(&ip->i_rw_mutex); in punch_hole()
1968 gfs2_quota_unhold(ip); in punch_hole()
1974 static int trunc_end(struct gfs2_inode *ip) in trunc_end() argument
1976 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); in trunc_end()
1984 down_write(&ip->i_rw_mutex); in trunc_end()
1986 error = gfs2_meta_inode_buffer(ip, &dibh); in trunc_end()
1990 if (!i_size_read(&ip->i_inode)) { in trunc_end()
1991 ip->i_height = 0; in trunc_end()
1992 ip->i_goal = ip->i_no_addr; in trunc_end()
1994 gfs2_ordered_del_inode(ip); in trunc_end()
1996 ip->i_inode.i_mtime = inode_set_ctime_current(&ip->i_inode); in trunc_end()
1997 ip->i_diskflags &= ~GFS2_DIF_TRUNC_IN_PROG; in trunc_end()
1999 gfs2_trans_add_meta(ip->i_gl, dibh); in trunc_end()
2000 gfs2_dinode_out(ip, dibh->b_data); in trunc_end()
2004 up_write(&ip->i_rw_mutex); in trunc_end()
2010 * do_shrink - make a file smaller
2022 struct gfs2_inode *ip = GFS2_I(inode); in do_shrink() local
2028 if (gfs2_is_stuffed(ip)) in do_shrink()
2031 error = punch_hole(ip, newsize, 0); in do_shrink()
2033 error = trunc_end(ip); in do_shrink()
2039 * do_grow - Touch and update inode size
2055 * Returns: 0 on success, or -ve on error
2060 struct gfs2_inode *ip = GFS2_I(inode); in do_grow() local
2067 if (gfs2_is_stuffed(ip) && size > gfs2_max_stuffed_size(ip)) { in do_grow()
2068 error = gfs2_quota_lock_check(ip, &ap); in do_grow()
2072 error = gfs2_inplace_reserve(ip, &ap); in do_grow()
2080 gfs2_is_jdata(ip) ? RES_JDATA : 0) + in do_grow()
2081 (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF ? in do_grow()
2087 error = gfs2_unstuff_dinode(ip); in do_grow()
2092 error = gfs2_meta_inode_buffer(ip, &dibh); in do_grow()
2097 ip->i_inode.i_mtime = inode_set_ctime_current(&ip->i_inode); in do_grow()
2098 gfs2_trans_add_meta(ip->i_gl, dibh); in do_grow()
2099 gfs2_dinode_out(ip, dibh->b_data); in do_grow()
2106 gfs2_inplace_release(ip); in do_grow()
2108 gfs2_quota_unlock(ip); in do_grow()
2114 * gfs2_setattr_size - make a file a given size
2127 struct gfs2_inode *ip = GFS2_I(inode); in gfs2_setattr_size() local
2130 BUG_ON(!S_ISREG(inode->i_mode)); in gfs2_setattr_size()
2138 ret = gfs2_qa_get(ip); in gfs2_setattr_size()
2142 if (newsize >= inode->i_size) { in gfs2_setattr_size()
2149 gfs2_rs_delete(ip); in gfs2_setattr_size()
2150 gfs2_qa_put(ip); in gfs2_setattr_size()
2154 int gfs2_truncatei_resume(struct gfs2_inode *ip) in gfs2_truncatei_resume() argument
2157 error = punch_hole(ip, i_size_read(&ip->i_inode), 0); in gfs2_truncatei_resume()
2159 error = trunc_end(ip); in gfs2_truncatei_resume()
2163 int gfs2_file_dealloc(struct gfs2_inode *ip) in gfs2_file_dealloc() argument
2165 return punch_hole(ip, 0, 0); in gfs2_file_dealloc()
2169 * gfs2_free_journal_extents - Free cached journal bmap info
2178 while(!list_empty(&jd->extent_list)) { in gfs2_free_journal_extents()
2179 jext = list_first_entry(&jd->extent_list, struct gfs2_journal_extent, list); in gfs2_free_journal_extents()
2180 list_del(&jext->list); in gfs2_free_journal_extents()
2186 * gfs2_add_jextent - Add or merge a new extent to extent cache
2188 * @lblock: The logical block at start of new extent
2189 * @dblock: The physical block at start of new extent
2192 * Returns: 0 on success or -ENOMEM
2199 if (!list_empty(&jd->extent_list)) { in gfs2_add_jextent()
2200 jext = list_last_entry(&jd->extent_list, struct gfs2_journal_extent, list); in gfs2_add_jextent()
2201 if ((jext->dblock + jext->blocks) == dblock) { in gfs2_add_jextent()
2202 jext->blocks += blocks; in gfs2_add_jextent()
2209 return -ENOMEM; in gfs2_add_jextent()
2210 jext->dblock = dblock; in gfs2_add_jextent()
2211 jext->lblock = lblock; in gfs2_add_jextent()
2212 jext->blocks = blocks; in gfs2_add_jextent()
2213 list_add_tail(&jext->list, &jd->extent_list); in gfs2_add_jextent()
2214 jd->nr_extents++; in gfs2_add_jextent()
2219 * gfs2_map_journal_extents - Cache journal bmap info
2220 * @sdp: The super block
2228 * So the extent would map the first block for the entire file length.
2242 struct gfs2_inode *ip = GFS2_I(jd->jd_inode); in gfs2_map_journal_extents() local
2244 unsigned int shift = sdp->sd_sb.sb_bsize_shift; in gfs2_map_journal_extents()
2250 lblock_stop = i_size_read(jd->jd_inode) >> shift; in gfs2_map_journal_extents()
2251 size = (lblock_stop - lblock) << shift; in gfs2_map_journal_extents()
2252 jd->nr_extents = 0; in gfs2_map_journal_extents()
2253 WARN_ON(!list_empty(&jd->extent_list)); in gfs2_map_journal_extents()
2259 rc = gfs2_block_map(jd->jd_inode, lblock, &bh, 0); in gfs2_map_journal_extents()
2265 size -= bh.b_size; in gfs2_map_journal_extents()
2266 lblock += (bh.b_size >> ip->i_inode.i_blkbits); in gfs2_map_journal_extents()
2270 fs_info(sdp, "journal %d mapped with %u extents in %lldms\n", jd->jd_jid, in gfs2_map_journal_extents()
2271 jd->nr_extents, ktime_ms_delta(end, start)); in gfs2_map_journal_extents()
2276 rc, jd->jd_jid, in gfs2_map_journal_extents()
2277 (unsigned long long)(i_size_read(jd->jd_inode) - size), in gfs2_map_journal_extents()
2278 jd->nr_extents); in gfs2_map_journal_extents()
2279 fs_warn(sdp, "bmap=%d lblock=%llu block=%llu, state=0x%08lx, size=%llu\n", in gfs2_map_journal_extents()
2287 * gfs2_write_alloc_required - figure out if a write will require an allocation
2288 * @ip: the file being written to
2295 int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset, in gfs2_write_alloc_required() argument
2298 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); in gfs2_write_alloc_required()
2307 if (gfs2_is_stuffed(ip)) { in gfs2_write_alloc_required()
2308 if (offset + len > gfs2_max_stuffed_size(ip)) in gfs2_write_alloc_required()
2313 shift = sdp->sd_sb.sb_bsize_shift; in gfs2_write_alloc_required()
2314 BUG_ON(gfs2_is_dir(ip)); in gfs2_write_alloc_required()
2315 end_of_file = (i_size_read(&ip->i_inode) + sdp->sd_sb.sb_bsize - 1) >> shift; in gfs2_write_alloc_required()
2317 lblock_stop = (offset + len + sdp->sd_sb.sb_bsize - 1) >> shift; in gfs2_write_alloc_required()
2318 if (lblock_stop > end_of_file && ip != GFS2_I(sdp->sd_rindex)) in gfs2_write_alloc_required()
2321 size = (lblock_stop - lblock) << shift; in gfs2_write_alloc_required()
2325 gfs2_block_map(&ip->i_inode, lblock, &bh, 0); in gfs2_write_alloc_required()
2328 size -= bh.b_size; in gfs2_write_alloc_required()
2329 lblock += (bh.b_size >> ip->i_inode.i_blkbits); in gfs2_write_alloc_required()
2337 struct gfs2_inode *ip = GFS2_I(inode); in stuffed_zero_range() local
2341 if (offset >= inode->i_size) in stuffed_zero_range()
2343 if (offset + length > inode->i_size) in stuffed_zero_range()
2344 length = inode->i_size - offset; in stuffed_zero_range()
2346 error = gfs2_meta_inode_buffer(ip, &dibh); in stuffed_zero_range()
2349 gfs2_trans_add_meta(ip->i_gl, dibh); in stuffed_zero_range()
2350 memset(dibh->b_data + sizeof(struct gfs2_dinode) + offset, 0, in stuffed_zero_range()
2360 loff_t max_chunk = GFS2_JTRUNC_REVOKES * sdp->sd_vfs->s_blocksize; in gfs2_journaled_truncate_range()
2374 chunk = offs + ((chunk - offs) & PAGE_MASK); in gfs2_journaled_truncate_range()
2378 length -= chunk; in gfs2_journaled_truncate_range()
2380 tr = current->journal_info; in gfs2_journaled_truncate_range()
2381 if (!test_bit(TR_TOUCHED, &tr->tr_flags)) in gfs2_journaled_truncate_range()
2395 struct gfs2_inode *ip = GFS2_I(inode); in __gfs2_punch_hole() local
2401 if (!gfs2_is_stuffed(ip)) { in __gfs2_punch_hole()
2404 start_off = offset & (blocksize - 1); in __gfs2_punch_hole()
2405 end_len = (offset + length) & (blocksize - 1); in __gfs2_punch_hole()
2408 if (length > blocksize - start_off) in __gfs2_punch_hole()
2409 len = blocksize - start_off; in __gfs2_punch_hole()
2418 offset + length - end_len, end_len); in __gfs2_punch_hole()
2425 end = round_up(offset + length, blocksize) - 1; in __gfs2_punch_hole()
2426 error = filemap_write_and_wait_range(inode->i_mapping, start, end); in __gfs2_punch_hole()
2430 if (gfs2_is_jdata(ip)) in __gfs2_punch_hole()
2438 if (gfs2_is_stuffed(ip)) { in __gfs2_punch_hole()
2444 if (gfs2_is_jdata(ip)) { in __gfs2_punch_hole()
2445 BUG_ON(!current->journal_info); in __gfs2_punch_hole()
2448 truncate_pagecache_range(inode, offset, offset + length - 1); in __gfs2_punch_hole()
2453 if (current->journal_info) in __gfs2_punch_hole()
2456 if (!gfs2_is_stuffed(ip)) in __gfs2_punch_hole()
2457 error = punch_hole(ip, offset, length); in __gfs2_punch_hole()
2460 if (current->journal_info) in __gfs2_punch_hole()
2471 return -EIO; in gfs2_map_blocks()
2473 if (offset >= wpc->iomap.offset && in gfs2_map_blocks()
2474 offset < wpc->iomap.offset + wpc->iomap.length) in gfs2_map_blocks()
2477 memset(&wpc->iomap, 0, sizeof(wpc->iomap)); in gfs2_map_blocks()
2478 ret = gfs2_iomap_get(inode, offset, INT_MAX, &wpc->iomap); in gfs2_map_blocks()