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authorLinus Torvalds <torvalds@linux-foundation.org>2023-09-17 10:33:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2023-09-17 10:33:53 -0700
commit3fde3003cab845c124253c0a42eb0cf70220c5da (patch)
tree753939342009369e94684adb34765f83df6e10a4
parentf0b0d403eabbe135d8dbb40ad5e41018947d336c (diff)
parent7fda67e8c3ab6069f75888f67958a6d30454a9f6 (diff)
Merge tag 'ext4_for_linus-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o: "Regression and bug fixes for ext4" * tag 'ext4_for_linus-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: fix rec_len verify error ext4: do not let fstrim block system suspend ext4: move setting of trimmed bit into ext4_try_to_trim_range() jbd2: Fix memory leak in journal_init_common() jbd2: Remove page size assumptions buffer: Make bh_offset() work for compound pages
-rw-r--r--fs/ext4/mballoc.c54
-rw-r--r--fs/ext4/namei.c26
-rw-r--r--fs/jbd2/commit.c16
-rw-r--r--fs/jbd2/journal.c2
-rw-r--r--fs/jbd2/transaction.c12
-rw-r--r--include/linux/buffer_head.h5
6 files changed, 64 insertions, 51 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index c91db9f57524..1e599305d85f 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -16,6 +16,7 @@
#include <linux/slab.h>
#include <linux/nospec.h>
#include <linux/backing-dev.h>
+#include <linux/freezer.h>
#include <trace/events/ext4.h>
/*
@@ -6906,6 +6907,21 @@ __acquires(bitlock)
return ret;
}
+static ext4_grpblk_t ext4_last_grp_cluster(struct super_block *sb,
+ ext4_group_t grp)
+{
+ if (grp < ext4_get_groups_count(sb))
+ return EXT4_CLUSTERS_PER_GROUP(sb) - 1;
+ return (ext4_blocks_count(EXT4_SB(sb)->s_es) -
+ ext4_group_first_block_no(sb, grp) - 1) >>
+ EXT4_CLUSTER_BITS(sb);
+}
+
+static bool ext4_trim_interrupted(void)
+{
+ return fatal_signal_pending(current) || freezing(current);
+}
+
static int ext4_try_to_trim_range(struct super_block *sb,
struct ext4_buddy *e4b, ext4_grpblk_t start,
ext4_grpblk_t max, ext4_grpblk_t minblocks)
@@ -6913,9 +6929,12 @@ __acquires(ext4_group_lock_ptr(sb, e4b->bd_group))
__releases(ext4_group_lock_ptr(sb, e4b->bd_group))
{
ext4_grpblk_t next, count, free_count;
+ bool set_trimmed = false;
void *bitmap;
bitmap = e4b->bd_bitmap;
+ if (start == 0 && max >= ext4_last_grp_cluster(sb, e4b->bd_group))
+ set_trimmed = true;
start = max(e4b->bd_info->bb_first_free, start);
count = 0;
free_count = 0;
@@ -6930,16 +6949,14 @@ __releases(ext4_group_lock_ptr(sb, e4b->bd_group))
int ret = ext4_trim_extent(sb, start, next - start, e4b);
if (ret && ret != -EOPNOTSUPP)
- break;
+ return count;
count += next - start;
}
free_count += next - start;
start = next + 1;
- if (fatal_signal_pending(current)) {
- count = -ERESTARTSYS;
- break;
- }
+ if (ext4_trim_interrupted())
+ return count;
if (need_resched()) {
ext4_unlock_group(sb, e4b->bd_group);
@@ -6951,6 +6968,9 @@ __releases(ext4_group_lock_ptr(sb, e4b->bd_group))
break;
}
+ if (set_trimmed)
+ EXT4_MB_GRP_SET_TRIMMED(e4b->bd_info);
+
return count;
}
@@ -6961,7 +6981,6 @@ __releases(ext4_group_lock_ptr(sb, e4b->bd_group))
* @start: first group block to examine
* @max: last group block to examine
* @minblocks: minimum extent block count
- * @set_trimmed: set the trimmed flag if at least one block is trimmed
*
* ext4_trim_all_free walks through group's block bitmap searching for free
* extents. When the free extent is found, mark it as used in group buddy
@@ -6971,7 +6990,7 @@ __releases(ext4_group_lock_ptr(sb, e4b->bd_group))
static ext4_grpblk_t
ext4_trim_all_free(struct super_block *sb, ext4_group_t group,
ext4_grpblk_t start, ext4_grpblk_t max,
- ext4_grpblk_t minblocks, bool set_trimmed)
+ ext4_grpblk_t minblocks)
{
struct ext4_buddy e4b;
int ret;
@@ -6988,13 +7007,10 @@ ext4_trim_all_free(struct super_block *sb, ext4_group_t group,
ext4_lock_group(sb, group);
if (!EXT4_MB_GRP_WAS_TRIMMED(e4b.bd_info) ||
- minblocks < EXT4_SB(sb)->s_last_trim_minblks) {
+ minblocks < EXT4_SB(sb)->s_last_trim_minblks)
ret = ext4_try_to_trim_range(sb, &e4b, start, max, minblocks);
- if (ret >= 0 && set_trimmed)
- EXT4_MB_GRP_SET_TRIMMED(e4b.bd_info);
- } else {
+ else
ret = 0;
- }
ext4_unlock_group(sb, group);
ext4_mb_unload_buddy(&e4b);
@@ -7027,7 +7043,6 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
ext4_fsblk_t first_data_blk =
le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block);
ext4_fsblk_t max_blks = ext4_blocks_count(EXT4_SB(sb)->s_es);
- bool whole_group, eof = false;
int ret = 0;
start = range->start >> sb->s_blocksize_bits;
@@ -7046,10 +7061,8 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
if (minlen > EXT4_CLUSTERS_PER_GROUP(sb))
goto out;
}
- if (end >= max_blks - 1) {
+ if (end >= max_blks - 1)
end = max_blks - 1;
- eof = true;
- }
if (end <= first_data_blk)
goto out;
if (start < first_data_blk)
@@ -7063,9 +7076,10 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
/* end now represents the last cluster to discard in this group */
end = EXT4_CLUSTERS_PER_GROUP(sb) - 1;
- whole_group = true;
for (group = first_group; group <= last_group; group++) {
+ if (ext4_trim_interrupted())
+ break;
grp = ext4_get_group_info(sb, group);
if (!grp)
continue;
@@ -7082,13 +7096,11 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
* change it for the last group, note that last_cluster is
* already computed earlier by ext4_get_group_no_and_offset()
*/
- if (group == last_group) {
+ if (group == last_group)
end = last_cluster;
- whole_group = eof ? true : end == EXT4_CLUSTERS_PER_GROUP(sb) - 1;
- }
if (grp->bb_free >= minlen) {
cnt = ext4_trim_all_free(sb, group, first_cluster,
- end, minlen, whole_group);
+ end, minlen);
if (cnt < 0) {
ret = cnt;
break;
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 41a6411c600b..bbda587f76b8 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -343,17 +343,17 @@ static struct ext4_dir_entry_tail *get_dirent_tail(struct inode *inode,
struct buffer_head *bh)
{
struct ext4_dir_entry_tail *t;
+ int blocksize = EXT4_BLOCK_SIZE(inode->i_sb);
#ifdef PARANOID
struct ext4_dir_entry *d, *top;
d = (struct ext4_dir_entry *)bh->b_data;
top = (struct ext4_dir_entry *)(bh->b_data +
- (EXT4_BLOCK_SIZE(inode->i_sb) -
- sizeof(struct ext4_dir_entry_tail)));
- while (d < top && d->rec_len)
+ (blocksize - sizeof(struct ext4_dir_entry_tail)));
+ while (d < top && ext4_rec_len_from_disk(d->rec_len, blocksize))
d = (struct ext4_dir_entry *)(((void *)d) +
- le16_to_cpu(d->rec_len));
+ ext4_rec_len_from_disk(d->rec_len, blocksize));
if (d != top)
return NULL;
@@ -364,7 +364,8 @@ static struct ext4_dir_entry_tail *get_dirent_tail(struct inode *inode,
#endif
if (t->det_reserved_zero1 ||
- le16_to_cpu(t->det_rec_len) != sizeof(struct ext4_dir_entry_tail) ||
+ (ext4_rec_len_from_disk(t->det_rec_len, blocksize) !=
+ sizeof(struct ext4_dir_entry_tail)) ||
t->det_reserved_zero2 ||
t->det_reserved_ft != EXT4_FT_DIR_CSUM)
return NULL;
@@ -445,13 +446,14 @@ static struct dx_countlimit *get_dx_countlimit(struct inode *inode,
struct ext4_dir_entry *dp;
struct dx_root_info *root;
int count_offset;
+ int blocksize = EXT4_BLOCK_SIZE(inode->i_sb);
+ unsigned int rlen = ext4_rec_len_from_disk(dirent->rec_len, blocksize);
- if (le16_to_cpu(dirent->rec_len) == EXT4_BLOCK_SIZE(inode->i_sb))
+ if (rlen == blocksize)
count_offset = 8;
- else if (le16_to_cpu(dirent->rec_len) == 12) {
+ else if (rlen == 12) {
dp = (struct ext4_dir_entry *)(((void *)dirent) + 12);
- if (le16_to_cpu(dp->rec_len) !=
- EXT4_BLOCK_SIZE(inode->i_sb) - 12)
+ if (ext4_rec_len_from_disk(dp->rec_len, blocksize) != blocksize - 12)
return NULL;
root = (struct dx_root_info *)(((void *)dp + 12));
if (root->reserved_zero ||
@@ -1315,6 +1317,7 @@ static int dx_make_map(struct inode *dir, struct buffer_head *bh,
unsigned int buflen = bh->b_size;
char *base = bh->b_data;
struct dx_hash_info h = *hinfo;
+ int blocksize = EXT4_BLOCK_SIZE(dir->i_sb);
if (ext4_has_metadata_csum(dir->i_sb))
buflen -= sizeof(struct ext4_dir_entry_tail);
@@ -1335,11 +1338,12 @@ static int dx_make_map(struct inode *dir, struct buffer_head *bh,
map_tail--;
map_tail->hash = h.hash;
map_tail->offs = ((char *) de - base)>>2;
- map_tail->size = le16_to_cpu(de->rec_len);
+ map_tail->size = ext4_rec_len_from_disk(de->rec_len,
+ blocksize);
count++;
cond_resched();
}
- de = ext4_next_entry(de, dir->i_sb->s_blocksize);
+ de = ext4_next_entry(de, blocksize);
}
return count;
}
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 1073259902a6..8d6f934c3d95 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -298,14 +298,12 @@ static int journal_finish_inode_data_buffers(journal_t *journal,
static __u32 jbd2_checksum_data(__u32 crc32_sum, struct buffer_head *bh)
{
- struct page *page = bh->b_page;
char *addr;
__u32 checksum;
- addr = kmap_atomic(page);
- checksum = crc32_be(crc32_sum,
- (void *)(addr + offset_in_page(bh->b_data)), bh->b_size);
- kunmap_atomic(addr);
+ addr = kmap_local_folio(bh->b_folio, bh_offset(bh));
+ checksum = crc32_be(crc32_sum, addr, bh->b_size);
+ kunmap_local(addr);
return checksum;
}
@@ -322,7 +320,6 @@ static void jbd2_block_tag_csum_set(journal_t *j, journal_block_tag_t *tag,
struct buffer_head *bh, __u32 sequence)
{
journal_block_tag3_t *tag3 = (journal_block_tag3_t *)tag;
- struct page *page = bh->b_page;
__u8 *addr;
__u32 csum32;
__be32 seq;
@@ -331,11 +328,10 @@ static void jbd2_block_tag_csum_set(journal_t *j, journal_block_tag_t *tag,
return;
seq = cpu_to_be32(sequence);
- addr = kmap_atomic(page);
+ addr = kmap_local_folio(bh->b_folio, bh_offset(bh));
csum32 = jbd2_chksum(j, j->j_csum_seed, (__u8 *)&seq, sizeof(seq));
- csum32 = jbd2_chksum(j, csum32, addr + offset_in_page(bh->b_data),
- bh->b_size);
- kunmap_atomic(addr);
+ csum32 = jbd2_chksum(j, csum32, addr, bh->b_size);
+ kunmap_local(addr);
if (jbd2_has_feature_csum3(j))
tag3->t_checksum = cpu_to_be32(csum32);
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 768fa05bcbed..30dec2bd2ecc 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1601,6 +1601,8 @@ static journal_t *journal_init_common(struct block_device *bdev,
err_cleanup:
percpu_counter_destroy(&journal->j_checkpoint_jh_count);
+ if (journal->j_chksum_driver)
+ crypto_free_shash(journal->j_chksum_driver);
kfree(journal->j_wbuf);
jbd2_journal_destroy_revoke(journal);
journal_fail_superblock(journal);
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index 4d1fda1f7143..5f08b5fd105a 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -935,19 +935,15 @@ static void warn_dirty_buffer(struct buffer_head *bh)
/* Call t_frozen trigger and copy buffer data into jh->b_frozen_data. */
static void jbd2_freeze_jh_data(struct journal_head *jh)
{
- struct page *page;
- int offset;
char *source;
struct buffer_head *bh = jh2bh(jh);
J_EXPECT_JH(jh, buffer_uptodate(bh), "Possible IO failure.\n");
- page = bh->b_page;
- offset = offset_in_page(bh->b_data);
- source = kmap_atomic(page);
+ source = kmap_local_folio(bh->b_folio, bh_offset(bh));
/* Fire data frozen trigger just before we copy the data */
- jbd2_buffer_frozen_trigger(jh, source + offset, jh->b_triggers);
- memcpy(jh->b_frozen_data, source + offset, bh->b_size);
- kunmap_atomic(source);
+ jbd2_buffer_frozen_trigger(jh, source, jh->b_triggers);
+ memcpy(jh->b_frozen_data, source, bh->b_size);
+ kunmap_local(source);
/*
* Now that the frozen data is saved off, we need to store any matching
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 4ede47649a81..44e9de51eedf 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -171,7 +171,10 @@ static __always_inline int buffer_uptodate(const struct buffer_head *bh)
return test_bit_acquire(BH_Uptodate, &bh->b_state);
}
-#define bh_offset(bh) ((unsigned long)(bh)->b_data & ~PAGE_MASK)
+static inline unsigned long bh_offset(const struct buffer_head *bh)
+{
+ return (unsigned long)(bh)->b_data & (page_size(bh->b_page) - 1);
+}
/* If we *know* page->private refers to buffer_heads */
#define page_buffers(page) \