diff options
author | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-12 23:21:28 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-12 23:21:28 -0400 |
commit | bd4c625c061c2a38568d0add3478f59172455159 (patch) | |
tree | 1c44a17c55bce2ee7ad5ea3d15a208ecc0955f74 /fs/reiserfs/resize.c | |
parent | 7fa94c8868edfef8cb6a201fcc9a5078b7b961da (diff) |
reiserfs: run scripts/Lindent on reiserfs code
This was a pure indentation change, using:
scripts/Lindent fs/reiserfs/*.c include/linux/reiserfs_*.h
to make reiserfs match the regular Linux indentation style. As Jeff
Mahoney <jeffm@suse.com> writes:
The ReiserFS code is a mix of a number of different coding styles, sometimes
different even from line-to-line. Since the code has been relatively stable
for quite some time and there are few outstanding patches to be applied, it
is time to reformat the code to conform to the Linux style standard outlined
in Documentation/CodingStyle.
This patch contains the result of running scripts/Lindent against
fs/reiserfs/*.c and include/linux/reiserfs_*.h. There are places where the
code can be made to look better, but I'd rather keep those patches separate
so that there isn't a subtle by-hand hand accident in the middle of a huge
patch. To be clear: This patch is reformatting *only*.
A number of patches may follow that continue to make the code more consistent
with the Linux coding style.
Hans wasn't particularly enthusiastic about these patches, but said he
wouldn't really oppose them either.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/reiserfs/resize.c')
-rw-r--r-- | fs/reiserfs/resize.c | 207 |
1 files changed, 108 insertions, 99 deletions
diff --git a/fs/reiserfs/resize.c b/fs/reiserfs/resize.c index 170012078b76..39cc7f47f5dc 100644 --- a/fs/reiserfs/resize.c +++ b/fs/reiserfs/resize.c | |||
@@ -1,7 +1,7 @@ | |||
1 | /* | 1 | /* |
2 | * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README | 2 | * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README |
3 | */ | 3 | */ |
4 | 4 | ||
5 | /* | 5 | /* |
6 | * Written by Alexander Zarochentcev. | 6 | * Written by Alexander Zarochentcev. |
7 | * | 7 | * |
@@ -17,23 +17,23 @@ | |||
17 | #include <linux/reiserfs_fs_sb.h> | 17 | #include <linux/reiserfs_fs_sb.h> |
18 | #include <linux/buffer_head.h> | 18 | #include <linux/buffer_head.h> |
19 | 19 | ||
20 | int reiserfs_resize (struct super_block * s, unsigned long block_count_new) | 20 | int reiserfs_resize(struct super_block *s, unsigned long block_count_new) |
21 | { | 21 | { |
22 | int err = 0; | 22 | int err = 0; |
23 | struct reiserfs_super_block * sb; | 23 | struct reiserfs_super_block *sb; |
24 | struct reiserfs_bitmap_info *bitmap; | 24 | struct reiserfs_bitmap_info *bitmap; |
25 | struct reiserfs_bitmap_info *old_bitmap = SB_AP_BITMAP(s); | 25 | struct reiserfs_bitmap_info *old_bitmap = SB_AP_BITMAP(s); |
26 | struct buffer_head * bh; | 26 | struct buffer_head *bh; |
27 | struct reiserfs_transaction_handle th; | 27 | struct reiserfs_transaction_handle th; |
28 | unsigned int bmap_nr_new, bmap_nr; | 28 | unsigned int bmap_nr_new, bmap_nr; |
29 | unsigned int block_r_new, block_r; | 29 | unsigned int block_r_new, block_r; |
30 | 30 | ||
31 | struct reiserfs_list_bitmap * jb; | 31 | struct reiserfs_list_bitmap *jb; |
32 | struct reiserfs_list_bitmap jbitmap[JOURNAL_NUM_BITMAPS]; | 32 | struct reiserfs_list_bitmap jbitmap[JOURNAL_NUM_BITMAPS]; |
33 | 33 | ||
34 | unsigned long int block_count, free_blocks; | 34 | unsigned long int block_count, free_blocks; |
35 | int i; | 35 | int i; |
36 | int copy_size ; | 36 | int copy_size; |
37 | 37 | ||
38 | sb = SB_DISK_SUPER_BLOCK(s); | 38 | sb = SB_DISK_SUPER_BLOCK(s); |
39 | 39 | ||
@@ -47,136 +47,145 @@ int reiserfs_resize (struct super_block * s, unsigned long block_count_new) | |||
47 | if (!bh) { | 47 | if (!bh) { |
48 | printk("reiserfs_resize: can\'t read last block\n"); | 48 | printk("reiserfs_resize: can\'t read last block\n"); |
49 | return -EINVAL; | 49 | return -EINVAL; |
50 | } | 50 | } |
51 | bforget(bh); | 51 | bforget(bh); |
52 | 52 | ||
53 | /* old disk layout detection; those partitions can be mounted, but | 53 | /* old disk layout detection; those partitions can be mounted, but |
54 | * cannot be resized */ | 54 | * cannot be resized */ |
55 | if (SB_BUFFER_WITH_SB(s)->b_blocknr * SB_BUFFER_WITH_SB(s)->b_size | 55 | if (SB_BUFFER_WITH_SB(s)->b_blocknr * SB_BUFFER_WITH_SB(s)->b_size |
56 | != REISERFS_DISK_OFFSET_IN_BYTES ) { | 56 | != REISERFS_DISK_OFFSET_IN_BYTES) { |
57 | printk("reiserfs_resize: unable to resize a reiserfs without distributed bitmap (fs version < 3.5.12)\n"); | 57 | printk |
58 | ("reiserfs_resize: unable to resize a reiserfs without distributed bitmap (fs version < 3.5.12)\n"); | ||
58 | return -ENOTSUPP; | 59 | return -ENOTSUPP; |
59 | } | 60 | } |
60 | 61 | ||
61 | /* count used bits in last bitmap block */ | 62 | /* count used bits in last bitmap block */ |
62 | block_r = SB_BLOCK_COUNT(s) - | 63 | block_r = SB_BLOCK_COUNT(s) - (SB_BMAP_NR(s) - 1) * s->s_blocksize * 8; |
63 | (SB_BMAP_NR(s) - 1) * s->s_blocksize * 8; | 64 | |
64 | |||
65 | /* count bitmap blocks in new fs */ | 65 | /* count bitmap blocks in new fs */ |
66 | bmap_nr_new = block_count_new / ( s->s_blocksize * 8 ); | 66 | bmap_nr_new = block_count_new / (s->s_blocksize * 8); |
67 | block_r_new = block_count_new - bmap_nr_new * s->s_blocksize * 8; | 67 | block_r_new = block_count_new - bmap_nr_new * s->s_blocksize * 8; |
68 | if (block_r_new) | 68 | if (block_r_new) |
69 | bmap_nr_new++; | 69 | bmap_nr_new++; |
70 | else | 70 | else |
71 | block_r_new = s->s_blocksize * 8; | 71 | block_r_new = s->s_blocksize * 8; |
72 | 72 | ||
73 | /* save old values */ | 73 | /* save old values */ |
74 | block_count = SB_BLOCK_COUNT(s); | 74 | block_count = SB_BLOCK_COUNT(s); |
75 | bmap_nr = SB_BMAP_NR(s); | 75 | bmap_nr = SB_BMAP_NR(s); |
76 | 76 | ||
77 | /* resizing of reiserfs bitmaps (journal and real), if needed */ | 77 | /* resizing of reiserfs bitmaps (journal and real), if needed */ |
78 | if (bmap_nr_new > bmap_nr) { | 78 | if (bmap_nr_new > bmap_nr) { |
79 | /* reallocate journal bitmaps */ | 79 | /* reallocate journal bitmaps */ |
80 | if (reiserfs_allocate_list_bitmaps(s, jbitmap, bmap_nr_new) < 0) { | 80 | if (reiserfs_allocate_list_bitmaps(s, jbitmap, bmap_nr_new) < 0) { |
81 | printk("reiserfs_resize: unable to allocate memory for journal bitmaps\n"); | 81 | printk |
82 | unlock_super(s) ; | 82 | ("reiserfs_resize: unable to allocate memory for journal bitmaps\n"); |
83 | return -ENOMEM ; | 83 | unlock_super(s); |
84 | } | 84 | return -ENOMEM; |
85 | /* the new journal bitmaps are zero filled, now we copy in the bitmap | 85 | } |
86 | ** node pointers from the old journal bitmap structs, and then | 86 | /* the new journal bitmaps are zero filled, now we copy in the bitmap |
87 | ** transfer the new data structures into the journal struct. | 87 | ** node pointers from the old journal bitmap structs, and then |
88 | ** | 88 | ** transfer the new data structures into the journal struct. |
89 | ** using the copy_size var below allows this code to work for | 89 | ** |
90 | ** both shrinking and expanding the FS. | 90 | ** using the copy_size var below allows this code to work for |
91 | */ | 91 | ** both shrinking and expanding the FS. |
92 | copy_size = bmap_nr_new < bmap_nr ? bmap_nr_new : bmap_nr ; | 92 | */ |
93 | copy_size = copy_size * sizeof(struct reiserfs_list_bitmap_node *) ; | 93 | copy_size = bmap_nr_new < bmap_nr ? bmap_nr_new : bmap_nr; |
94 | for (i = 0 ; i < JOURNAL_NUM_BITMAPS ; i++) { | 94 | copy_size = |
95 | struct reiserfs_bitmap_node **node_tmp ; | 95 | copy_size * sizeof(struct reiserfs_list_bitmap_node *); |
96 | jb = SB_JOURNAL(s)->j_list_bitmap + i ; | 96 | for (i = 0; i < JOURNAL_NUM_BITMAPS; i++) { |
97 | memcpy(jbitmap[i].bitmaps, jb->bitmaps, copy_size) ; | 97 | struct reiserfs_bitmap_node **node_tmp; |
98 | 98 | jb = SB_JOURNAL(s)->j_list_bitmap + i; | |
99 | /* just in case vfree schedules on us, copy the new | 99 | memcpy(jbitmap[i].bitmaps, jb->bitmaps, copy_size); |
100 | ** pointer into the journal struct before freeing the | 100 | |
101 | ** old one | 101 | /* just in case vfree schedules on us, copy the new |
102 | */ | 102 | ** pointer into the journal struct before freeing the |
103 | node_tmp = jb->bitmaps ; | 103 | ** old one |
104 | jb->bitmaps = jbitmap[i].bitmaps ; | 104 | */ |
105 | vfree(node_tmp) ; | 105 | node_tmp = jb->bitmaps; |
106 | } | 106 | jb->bitmaps = jbitmap[i].bitmaps; |
107 | 107 | vfree(node_tmp); | |
108 | /* allocate additional bitmap blocks, reallocate array of bitmap | 108 | } |
109 | * block pointers */ | 109 | |
110 | bitmap = vmalloc(sizeof(struct reiserfs_bitmap_info) * bmap_nr_new); | 110 | /* allocate additional bitmap blocks, reallocate array of bitmap |
111 | if (!bitmap) { | 111 | * block pointers */ |
112 | /* Journal bitmaps are still supersized, but the memory isn't | 112 | bitmap = |
113 | * leaked, so I guess it's ok */ | 113 | vmalloc(sizeof(struct reiserfs_bitmap_info) * bmap_nr_new); |
114 | printk("reiserfs_resize: unable to allocate memory.\n"); | 114 | if (!bitmap) { |
115 | return -ENOMEM; | 115 | /* Journal bitmaps are still supersized, but the memory isn't |
116 | } | 116 | * leaked, so I guess it's ok */ |
117 | memset (bitmap, 0, sizeof (struct reiserfs_bitmap_info) * SB_BMAP_NR(s)); | 117 | printk("reiserfs_resize: unable to allocate memory.\n"); |
118 | for (i = 0; i < bmap_nr; i++) | 118 | return -ENOMEM; |
119 | bitmap[i] = old_bitmap[i]; | 119 | } |
120 | 120 | memset(bitmap, 0, | |
121 | /* This doesn't go through the journal, but it doesn't have to. | 121 | sizeof(struct reiserfs_bitmap_info) * SB_BMAP_NR(s)); |
122 | * The changes are still atomic: We're synced up when the journal | 122 | for (i = 0; i < bmap_nr; i++) |
123 | * transaction begins, and the new bitmaps don't matter if the | 123 | bitmap[i] = old_bitmap[i]; |
124 | * transaction fails. */ | 124 | |
125 | for (i = bmap_nr; i < bmap_nr_new; i++) { | 125 | /* This doesn't go through the journal, but it doesn't have to. |
126 | bitmap[i].bh = sb_getblk(s, i * s->s_blocksize * 8); | 126 | * The changes are still atomic: We're synced up when the journal |
127 | memset(bitmap[i].bh->b_data, 0, sb_blocksize(sb)); | 127 | * transaction begins, and the new bitmaps don't matter if the |
128 | reiserfs_test_and_set_le_bit(0, bitmap[i].bh->b_data); | 128 | * transaction fails. */ |
129 | 129 | for (i = bmap_nr; i < bmap_nr_new; i++) { | |
130 | set_buffer_uptodate(bitmap[i].bh); | 130 | bitmap[i].bh = sb_getblk(s, i * s->s_blocksize * 8); |
131 | mark_buffer_dirty(bitmap[i].bh) ; | 131 | memset(bitmap[i].bh->b_data, 0, sb_blocksize(sb)); |
132 | sync_dirty_buffer(bitmap[i].bh); | 132 | reiserfs_test_and_set_le_bit(0, bitmap[i].bh->b_data); |
133 | // update bitmap_info stuff | 133 | |
134 | bitmap[i].first_zero_hint=1; | 134 | set_buffer_uptodate(bitmap[i].bh); |
135 | bitmap[i].free_count = sb_blocksize(sb) * 8 - 1; | 135 | mark_buffer_dirty(bitmap[i].bh); |
136 | } | 136 | sync_dirty_buffer(bitmap[i].bh); |
137 | /* free old bitmap blocks array */ | 137 | // update bitmap_info stuff |
138 | SB_AP_BITMAP(s) = bitmap; | 138 | bitmap[i].first_zero_hint = 1; |
139 | vfree (old_bitmap); | 139 | bitmap[i].free_count = sb_blocksize(sb) * 8 - 1; |
140 | } | ||
141 | /* free old bitmap blocks array */ | ||
142 | SB_AP_BITMAP(s) = bitmap; | ||
143 | vfree(old_bitmap); | ||
140 | } | 144 | } |
141 | 145 | ||
142 | /* begin transaction, if there was an error, it's fine. Yes, we have | 146 | /* begin transaction, if there was an error, it's fine. Yes, we have |
143 | * incorrect bitmaps now, but none of it is ever going to touch the | 147 | * incorrect bitmaps now, but none of it is ever going to touch the |
144 | * disk anyway. */ | 148 | * disk anyway. */ |
145 | err = journal_begin(&th, s, 10); | 149 | err = journal_begin(&th, s, 10); |
146 | if (err) | 150 | if (err) |
147 | return err; | 151 | return err; |
148 | 152 | ||
149 | /* correct last bitmap blocks in old and new disk layout */ | 153 | /* correct last bitmap blocks in old and new disk layout */ |
150 | reiserfs_prepare_for_journal(s, SB_AP_BITMAP(s)[bmap_nr - 1].bh, 1); | 154 | reiserfs_prepare_for_journal(s, SB_AP_BITMAP(s)[bmap_nr - 1].bh, 1); |
151 | for (i = block_r; i < s->s_blocksize * 8; i++) | 155 | for (i = block_r; i < s->s_blocksize * 8; i++) |
152 | reiserfs_test_and_clear_le_bit(i, | 156 | reiserfs_test_and_clear_le_bit(i, |
153 | SB_AP_BITMAP(s)[bmap_nr - 1].bh->b_data); | 157 | SB_AP_BITMAP(s)[bmap_nr - |
158 | 1].bh->b_data); | ||
154 | SB_AP_BITMAP(s)[bmap_nr - 1].free_count += s->s_blocksize * 8 - block_r; | 159 | SB_AP_BITMAP(s)[bmap_nr - 1].free_count += s->s_blocksize * 8 - block_r; |
155 | if ( !SB_AP_BITMAP(s)[bmap_nr - 1].first_zero_hint) | 160 | if (!SB_AP_BITMAP(s)[bmap_nr - 1].first_zero_hint) |
156 | SB_AP_BITMAP(s)[bmap_nr - 1].first_zero_hint = block_r; | 161 | SB_AP_BITMAP(s)[bmap_nr - 1].first_zero_hint = block_r; |
157 | 162 | ||
158 | journal_mark_dirty(&th, s, SB_AP_BITMAP(s)[bmap_nr - 1].bh); | 163 | journal_mark_dirty(&th, s, SB_AP_BITMAP(s)[bmap_nr - 1].bh); |
159 | 164 | ||
160 | reiserfs_prepare_for_journal(s, SB_AP_BITMAP(s)[bmap_nr_new - 1].bh, 1); | 165 | reiserfs_prepare_for_journal(s, SB_AP_BITMAP(s)[bmap_nr_new - 1].bh, 1); |
161 | for (i = block_r_new; i < s->s_blocksize * 8; i++) | 166 | for (i = block_r_new; i < s->s_blocksize * 8; i++) |
162 | reiserfs_test_and_set_le_bit(i, | 167 | reiserfs_test_and_set_le_bit(i, |
163 | SB_AP_BITMAP(s)[bmap_nr_new - 1].bh->b_data); | 168 | SB_AP_BITMAP(s)[bmap_nr_new - |
169 | 1].bh->b_data); | ||
164 | journal_mark_dirty(&th, s, SB_AP_BITMAP(s)[bmap_nr_new - 1].bh); | 170 | journal_mark_dirty(&th, s, SB_AP_BITMAP(s)[bmap_nr_new - 1].bh); |
165 | 171 | ||
166 | SB_AP_BITMAP(s)[bmap_nr_new - 1].free_count -= s->s_blocksize * 8 - block_r_new; | 172 | SB_AP_BITMAP(s)[bmap_nr_new - 1].free_count -= |
173 | s->s_blocksize * 8 - block_r_new; | ||
167 | /* Extreme case where last bitmap is the only valid block in itself. */ | 174 | /* Extreme case where last bitmap is the only valid block in itself. */ |
168 | if ( !SB_AP_BITMAP(s)[bmap_nr_new - 1].free_count ) | 175 | if (!SB_AP_BITMAP(s)[bmap_nr_new - 1].free_count) |
169 | SB_AP_BITMAP(s)[bmap_nr_new - 1].first_zero_hint = 0; | 176 | SB_AP_BITMAP(s)[bmap_nr_new - 1].first_zero_hint = 0; |
170 | /* update super */ | 177 | /* update super */ |
171 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ; | 178 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); |
172 | free_blocks = SB_FREE_BLOCKS(s); | 179 | free_blocks = SB_FREE_BLOCKS(s); |
173 | PUT_SB_FREE_BLOCKS(s, free_blocks + (block_count_new - block_count - (bmap_nr_new - bmap_nr))); | 180 | PUT_SB_FREE_BLOCKS(s, |
181 | free_blocks + (block_count_new - block_count - | ||
182 | (bmap_nr_new - bmap_nr))); | ||
174 | PUT_SB_BLOCK_COUNT(s, block_count_new); | 183 | PUT_SB_BLOCK_COUNT(s, block_count_new); |
175 | PUT_SB_BMAP_NR(s, bmap_nr_new); | 184 | PUT_SB_BMAP_NR(s, bmap_nr_new); |
176 | s->s_dirt = 1; | 185 | s->s_dirt = 1; |
177 | 186 | ||
178 | journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); | 187 | journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); |
179 | 188 | ||
180 | SB_JOURNAL(s)->j_must_wait = 1; | 189 | SB_JOURNAL(s)->j_must_wait = 1; |
181 | return journal_end(&th, s, 10); | 190 | return journal_end(&th, s, 10); |
182 | } | 191 | } |