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Diffstat (limited to 'fs')
-rw-r--r--fs/block_dev.c114
-rw-r--r--fs/eventpoll.c4
-rw-r--r--fs/exec.c2
-rw-r--r--fs/ext2/super.c2
-rw-r--r--fs/ext3/balloc.c6
-rw-r--r--fs/jbd/commit.c6
-rw-r--r--fs/jbd/journal.c92
-rw-r--r--fs/jbd/transaction.c9
-rw-r--r--fs/minix/inode.c13
-rw-r--r--fs/proc/proc_misc.c2
-rw-r--r--fs/reiserfs/xattr.c2
-rw-r--r--fs/ufs/inode.c35
-rw-r--r--fs/ufs/truncate.c77
13 files changed, 215 insertions, 149 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 37534573960b..045f98854f14 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -884,6 +884,61 @@ void bd_set_size(struct block_device *bdev, loff_t size)
}
EXPORT_SYMBOL(bd_set_size);
+static int __blkdev_put(struct block_device *bdev, unsigned int subclass)
+{
+ int ret = 0;
+ struct inode *bd_inode = bdev->bd_inode;
+ struct gendisk *disk = bdev->bd_disk;
+
+ mutex_lock_nested(&bdev->bd_mutex, subclass);
+ lock_kernel();
+ if (!--bdev->bd_openers) {
+ sync_blockdev(bdev);
+ kill_bdev(bdev);
+ }
+ if (bdev->bd_contains == bdev) {
+ if (disk->fops->release)
+ ret = disk->fops->release(bd_inode, NULL);
+ } else {
+ mutex_lock_nested(&bdev->bd_contains->bd_mutex,
+ subclass + 1);
+ bdev->bd_contains->bd_part_count--;
+ mutex_unlock(&bdev->bd_contains->bd_mutex);
+ }
+ if (!bdev->bd_openers) {
+ struct module *owner = disk->fops->owner;
+
+ put_disk(disk);
+ module_put(owner);
+
+ if (bdev->bd_contains != bdev) {
+ kobject_put(&bdev->bd_part->kobj);
+ bdev->bd_part = NULL;
+ }
+ bdev->bd_disk = NULL;
+ bdev->bd_inode->i_data.backing_dev_info = &default_backing_dev_info;
+ if (bdev != bdev->bd_contains)
+ __blkdev_put(bdev->bd_contains, subclass + 1);
+ bdev->bd_contains = NULL;
+ }
+ unlock_kernel();
+ mutex_unlock(&bdev->bd_mutex);
+ bdput(bdev);
+ return ret;
+}
+
+int blkdev_put(struct block_device *bdev)
+{
+ return __blkdev_put(bdev, BD_MUTEX_NORMAL);
+}
+EXPORT_SYMBOL(blkdev_put);
+
+int blkdev_put_partition(struct block_device *bdev)
+{
+ return __blkdev_put(bdev, BD_MUTEX_PARTITION);
+}
+EXPORT_SYMBOL(blkdev_put_partition);
+
static int
blkdev_get_whole(struct block_device *bdev, mode_t mode, unsigned flags);
@@ -980,7 +1035,7 @@ out_first:
bdev->bd_disk = NULL;
bdev->bd_inode->i_data.backing_dev_info = &default_backing_dev_info;
if (bdev != bdev->bd_contains)
- blkdev_put(bdev->bd_contains);
+ __blkdev_put(bdev->bd_contains, BD_MUTEX_WHOLE);
bdev->bd_contains = NULL;
put_disk(disk);
module_put(owner);
@@ -1079,63 +1134,6 @@ static int blkdev_open(struct inode * inode, struct file * filp)
return res;
}
-static int __blkdev_put(struct block_device *bdev, unsigned int subclass)
-{
- int ret = 0;
- struct inode *bd_inode = bdev->bd_inode;
- struct gendisk *disk = bdev->bd_disk;
-
- mutex_lock_nested(&bdev->bd_mutex, subclass);
- lock_kernel();
- if (!--bdev->bd_openers) {
- sync_blockdev(bdev);
- kill_bdev(bdev);
- }
- if (bdev->bd_contains == bdev) {
- if (disk->fops->release)
- ret = disk->fops->release(bd_inode, NULL);
- } else {
- mutex_lock_nested(&bdev->bd_contains->bd_mutex,
- subclass + 1);
- bdev->bd_contains->bd_part_count--;
- mutex_unlock(&bdev->bd_contains->bd_mutex);
- }
- if (!bdev->bd_openers) {
- struct module *owner = disk->fops->owner;
-
- put_disk(disk);
- module_put(owner);
-
- if (bdev->bd_contains != bdev) {
- kobject_put(&bdev->bd_part->kobj);
- bdev->bd_part = NULL;
- }
- bdev->bd_disk = NULL;
- bdev->bd_inode->i_data.backing_dev_info = &default_backing_dev_info;
- if (bdev != bdev->bd_contains)
- __blkdev_put(bdev->bd_contains, subclass + 1);
- bdev->bd_contains = NULL;
- }
- unlock_kernel();
- mutex_unlock(&bdev->bd_mutex);
- bdput(bdev);
- return ret;
-}
-
-int blkdev_put(struct block_device *bdev)
-{
- return __blkdev_put(bdev, BD_MUTEX_NORMAL);
-}
-
-EXPORT_SYMBOL(blkdev_put);
-
-int blkdev_put_partition(struct block_device *bdev)
-{
- return __blkdev_put(bdev, BD_MUTEX_PARTITION);
-}
-
-EXPORT_SYMBOL(blkdev_put_partition);
-
static int blkdev_close(struct inode * inode, struct file * filp)
{
struct block_device *bdev = I_BDEV(filp->f_mapping->host);
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 19ffb043abbc..3a3567433b92 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -1168,7 +1168,7 @@ static int ep_unlink(struct eventpoll *ep, struct epitem *epi)
eexit_1:
DNPRINTK(3, (KERN_INFO "[%p] eventpoll: ep_unlink(%p, %p) = %d\n",
- current, ep, epi->file, error));
+ current, ep, epi->ffd.file, error));
return error;
}
@@ -1236,7 +1236,7 @@ static int ep_poll_callback(wait_queue_t *wait, unsigned mode, int sync, void *k
struct eventpoll *ep = epi->ep;
DNPRINTK(3, (KERN_INFO "[%p] eventpoll: poll_callback(%p) epi=%p ep=%p\n",
- current, epi->file, epi, ep));
+ current, epi->ffd.file, epi, ep));
write_lock_irqsave(&ep->lock, flags);
diff --git a/fs/exec.c b/fs/exec.c
index f7aabfeca033..54135df2a966 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -751,7 +751,7 @@ no_thread_group:
write_lock_irq(&tasklist_lock);
spin_lock(&oldsighand->siglock);
- spin_lock(&newsighand->siglock);
+ spin_lock_nested(&newsighand->siglock, SINGLE_DEPTH_NESTING);
rcu_assign_pointer(current->sighand, newsighand);
recalc_sigpending();
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index f2702cda9779..681dea8f9532 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -775,7 +775,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
if (EXT2_INODE_SIZE(sb) == 0)
goto cantfind_ext2;
sbi->s_inodes_per_block = sb->s_blocksize / EXT2_INODE_SIZE(sb);
- if (sbi->s_inodes_per_block == 0)
+ if (sbi->s_inodes_per_block == 0 || sbi->s_inodes_per_group == 0)
goto cantfind_ext2;
sbi->s_itb_per_group = sbi->s_inodes_per_group /
sbi->s_inodes_per_block;
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index a504a40d6d29..063d994bda0b 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -1269,12 +1269,12 @@ ext3_fsblk_t ext3_new_blocks(handle_t *handle, struct inode *inode,
goal = le32_to_cpu(es->s_first_data_block);
group_no = (goal - le32_to_cpu(es->s_first_data_block)) /
EXT3_BLOCKS_PER_GROUP(sb);
+ goal_group = group_no;
+retry_alloc:
gdp = ext3_get_group_desc(sb, group_no, &gdp_bh);
if (!gdp)
goto io_error;
- goal_group = group_no;
-retry:
free_blocks = le16_to_cpu(gdp->bg_free_blocks_count);
/*
* if there is not enough free blocks to make a new resevation
@@ -1349,7 +1349,7 @@ retry:
if (my_rsv) {
my_rsv = NULL;
group_no = goal_group;
- goto retry;
+ goto retry_alloc;
}
/* No space left on the device */
*errp = -ENOSPC;
diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c
index 0971814c38b8..42da60784311 100644
--- a/fs/jbd/commit.c
+++ b/fs/jbd/commit.c
@@ -261,7 +261,7 @@ void journal_commit_transaction(journal_t *journal)
struct buffer_head *bh = jh2bh(jh);
jbd_lock_bh_state(bh);
- kfree(jh->b_committed_data);
+ jbd_slab_free(jh->b_committed_data, bh->b_size);
jh->b_committed_data = NULL;
jbd_unlock_bh_state(bh);
}
@@ -745,14 +745,14 @@ restart_loop:
* Otherwise, we can just throw away the frozen data now.
*/
if (jh->b_committed_data) {
- kfree(jh->b_committed_data);
+ jbd_slab_free(jh->b_committed_data, bh->b_size);
jh->b_committed_data = NULL;
if (jh->b_frozen_data) {
jh->b_committed_data = jh->b_frozen_data;
jh->b_frozen_data = NULL;
}
} else if (jh->b_frozen_data) {
- kfree(jh->b_frozen_data);
+ jbd_slab_free(jh->b_frozen_data, bh->b_size);
jh->b_frozen_data = NULL;
}
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
index 8c9b28dff119..f66724ce443a 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -84,6 +84,7 @@ EXPORT_SYMBOL(journal_force_commit);
static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *);
static void __journal_abort_soft (journal_t *journal, int errno);
+static int journal_create_jbd_slab(size_t slab_size);
/*
* Helper function used to manage commit timeouts
@@ -328,10 +329,10 @@ repeat:
char *tmp;
jbd_unlock_bh_state(bh_in);
- tmp = jbd_rep_kmalloc(bh_in->b_size, GFP_NOFS);
+ tmp = jbd_slab_alloc(bh_in->b_size, GFP_NOFS);
jbd_lock_bh_state(bh_in);
if (jh_in->b_frozen_data) {
- kfree(tmp);
+ jbd_slab_free(tmp, bh_in->b_size);
goto repeat;
}
@@ -1069,17 +1070,17 @@ static int load_superblock(journal_t *journal)
int journal_load(journal_t *journal)
{
int err;
+ journal_superblock_t *sb;
err = load_superblock(journal);
if (err)
return err;
+ sb = journal->j_superblock;
/* If this is a V2 superblock, then we have to check the
* features flags on it. */
if (journal->j_format_version >= 2) {
- journal_superblock_t *sb = journal->j_superblock;
-
if ((sb->s_feature_ro_compat &
~cpu_to_be32(JFS_KNOWN_ROCOMPAT_FEATURES)) ||
(sb->s_feature_incompat &
@@ -1090,6 +1091,13 @@ int journal_load(journal_t *journal)
}
}
+ /*
+ * Create a slab for this blocksize
+ */
+ err = journal_create_jbd_slab(cpu_to_be32(sb->s_blocksize));
+ if (err)
+ return err;
+
/* Let the recovery code check whether it needs to recover any
* data from the journal. */
if (journal_recover(journal))
@@ -1612,6 +1620,77 @@ void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry)
}
/*
+ * jbd slab management: create 1k, 2k, 4k, 8k slabs as needed
+ * and allocate frozen and commit buffers from these slabs.
+ *
+ * Reason for doing this is to avoid, SLAB_DEBUG - since it could
+ * cause bh to cross page boundary.
+ */
+
+#define JBD_MAX_SLABS 5
+#define JBD_SLAB_INDEX(size) (size >> 11)
+
+static kmem_cache_t *jbd_slab[JBD_MAX_SLABS];
+static const char *jbd_slab_names[JBD_MAX_SLABS] = {
+ "jbd_1k", "jbd_2k", "jbd_4k", NULL, "jbd_8k"
+};
+
+static void journal_destroy_jbd_slabs(void)
+{
+ int i;
+
+ for (i = 0; i < JBD_MAX_SLABS; i++) {
+ if (jbd_slab[i])
+ kmem_cache_destroy(jbd_slab[i]);
+ jbd_slab[i] = NULL;
+ }
+}
+
+static int journal_create_jbd_slab(size_t slab_size)
+{
+ int i = JBD_SLAB_INDEX(slab_size);
+
+ BUG_ON(i >= JBD_MAX_SLABS);
+
+ /*
+ * Check if we already have a slab created for this size
+ */
+ if (jbd_slab[i])
+ return 0;
+
+ /*
+ * Create a slab and force alignment to be same as slabsize -
+ * this will make sure that allocations won't cross the page
+ * boundary.
+ */
+ jbd_slab[i] = kmem_cache_create(jbd_slab_names[i],
+ slab_size, slab_size, 0, NULL, NULL);
+ if (!jbd_slab[i]) {
+ printk(KERN_EMERG "JBD: no memory for jbd_slab cache\n");
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+void * jbd_slab_alloc(size_t size, gfp_t flags)
+{
+ int idx;
+
+ idx = JBD_SLAB_INDEX(size);
+ BUG_ON(jbd_slab[idx] == NULL);
+ return kmem_cache_alloc(jbd_slab[idx], flags | __GFP_NOFAIL);
+}
+
+void jbd_slab_free(void *ptr, size_t size)
+{
+ int idx;
+
+ idx = JBD_SLAB_INDEX(size);
+ BUG_ON(jbd_slab[idx] == NULL);
+ kmem_cache_free(jbd_slab[idx], ptr);
+}
+
+/*
* Journal_head storage management
*/
static kmem_cache_t *journal_head_cache;
@@ -1799,13 +1878,13 @@ static void __journal_remove_journal_head(struct buffer_head *bh)
printk(KERN_WARNING "%s: freeing "
"b_frozen_data\n",
__FUNCTION__);
- kfree(jh->b_frozen_data);
+ jbd_slab_free(jh->b_frozen_data, bh->b_size);
}
if (jh->b_committed_data) {
printk(KERN_WARNING "%s: freeing "
"b_committed_data\n",
__FUNCTION__);
- kfree(jh->b_committed_data);
+ jbd_slab_free(jh->b_committed_data, bh->b_size);
}
bh->b_private = NULL;
jh->b_bh = NULL; /* debug, really */
@@ -1961,6 +2040,7 @@ static void journal_destroy_caches(void)
journal_destroy_revoke_caches();
journal_destroy_journal_head_cache();
journal_destroy_handle_cache();
+ journal_destroy_jbd_slabs();
}
static int __init journal_init(void)
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index 508b2ea91f43..de2e4cbbf79a 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -666,8 +666,9 @@ repeat:
if (!frozen_buffer) {
JBUFFER_TRACE(jh, "allocate memory for buffer");
jbd_unlock_bh_state(bh);
- frozen_buffer = jbd_kmalloc(jh2bh(jh)->b_size,
- GFP_NOFS);
+ frozen_buffer =
+ jbd_slab_alloc(jh2bh(jh)->b_size,
+ GFP_NOFS);
if (!frozen_buffer) {
printk(KERN_EMERG
"%s: OOM for frozen_buffer\n",
@@ -879,7 +880,7 @@ int journal_get_undo_access(handle_t *handle, struct buffer_head *bh)
repeat:
if (!jh->b_committed_data) {
- committed_data = jbd_kmalloc(jh2bh(jh)->b_size, GFP_NOFS);
+ committed_data = jbd_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS);
if (!committed_data) {
printk(KERN_EMERG "%s: No memory for committed data\n",
__FUNCTION__);
@@ -906,7 +907,7 @@ repeat:
out:
journal_put_journal_head(jh);
if (unlikely(committed_data))
- kfree(committed_data);
+ jbd_slab_free(committed_data, bh->b_size);
return err;
}
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index 9ea91c5eeb7b..330ff9fc7cf0 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -204,6 +204,8 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
/*
* Allocate the buffer map to keep the superblock small.
*/
+ if (sbi->s_imap_blocks == 0 || sbi->s_zmap_blocks == 0)
+ goto out_illegal_sb;
i = (sbi->s_imap_blocks + sbi->s_zmap_blocks) * sizeof(bh);
map = kmalloc(i, GFP_KERNEL);
if (!map)
@@ -263,7 +265,7 @@ out_no_root:
out_no_bitmap:
printk("MINIX-fs: bad superblock or unable to read bitmaps\n");
- out_freemap:
+out_freemap:
for (i = 0; i < sbi->s_imap_blocks; i++)
brelse(sbi->s_imap[i]);
for (i = 0; i < sbi->s_zmap_blocks; i++)
@@ -276,11 +278,16 @@ out_no_map:
printk("MINIX-fs: can't allocate map\n");
goto out_release;
+out_illegal_sb:
+ if (!silent)
+ printk("MINIX-fs: bad superblock\n");
+ goto out_release;
+
out_no_fs:
if (!silent)
printk("VFS: Can't find a Minix or Minix V2 filesystem "
"on device %s\n", s->s_id);
- out_release:
+out_release:
brelse(bh);
goto out;
@@ -290,7 +297,7 @@ out_bad_hblock:
out_bad_sb:
printk("MINIX-fs: unable to read superblock\n");
- out:
+out:
s->s_fs_info = NULL;
kfree(sbi);
return -EINVAL;
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 9f2cfc30f9cf..942156225447 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -169,7 +169,7 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
"Mapped: %8lu kB\n"
"Slab: %8lu kB\n"
"PageTables: %8lu kB\n"
- "NFS Unstable: %8lu kB\n"
+ "NFS_Unstable: %8lu kB\n"
"Bounce: %8lu kB\n"
"CommitLimit: %8lu kB\n"
"Committed_AS: %8lu kB\n"
diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c
index 39fedaa88a0c..d935fb9394e3 100644
--- a/fs/reiserfs/xattr.c
+++ b/fs/reiserfs/xattr.c
@@ -424,7 +424,7 @@ int xattr_readdir(struct file *file, filldir_t filler, void *buf)
int res = -ENOTDIR;
if (!file->f_op || !file->f_op->readdir)
goto out;
- mutex_lock(&inode->i_mutex);
+ mutex_lock_nested(&inode->i_mutex, I_MUTEX_XATTR);
// down(&inode->i_zombie);
res = -ENOENT;
if (!IS_DEADDIR(inode)) {
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index e7c8615beb65..30c6e8a9446c 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -169,18 +169,20 @@ static void ufs_clear_frag(struct inode *inode, struct buffer_head *bh)
static struct buffer_head *
ufs_clear_frags(struct inode *inode, sector_t beg,
- unsigned int n)
+ unsigned int n, sector_t want)
{
- struct buffer_head *res, *bh;
+ struct buffer_head *res = NULL, *bh;
sector_t end = beg + n;
- res = sb_getblk(inode->i_sb, beg);
- ufs_clear_frag(inode, res);
- for (++beg; beg < end; ++beg) {
+ for (; beg < end; ++beg) {
bh = sb_getblk(inode->i_sb, beg);
ufs_clear_frag(inode, bh);
- brelse(bh);
+ if (want != beg)
+ brelse(bh);
+ else
+ res = bh;
}
+ BUG_ON(!res);
return res;
}
@@ -265,7 +267,9 @@ repeat:
lastfrag = ufsi->i_lastfrag;
}
- goal = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock]) + uspi->s_fpb;
+ tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock]);
+ if (tmp)
+ goal = tmp + uspi->s_fpb;
tmp = ufs_new_fragments (inode, p, fragment - blockoff,
goal, required + blockoff,
err, locked_page);
@@ -277,13 +281,15 @@ repeat:
tmp = ufs_new_fragments(inode, p, fragment - (blockoff - lastblockoff),
fs32_to_cpu(sb, *p), required + (blockoff - lastblockoff),
err, locked_page);
- }
+ } else /* (lastblock > block) */ {
/*
* We will allocate new block before last allocated block
*/
- else /* (lastblock > block) */ {
- if (lastblock && (tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock-1])))
- goal = tmp + uspi->s_fpb;
+ if (block) {
+ tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[block-1]);
+ if (tmp)
+ goal = tmp + uspi->s_fpb;
+ }
tmp = ufs_new_fragments(inode, p, fragment - blockoff,
goal, uspi->s_fpb, err, locked_page);
}
@@ -296,7 +302,7 @@ repeat:
}
if (!phys) {
- result = ufs_clear_frags(inode, tmp + blockoff, required);
+ result = ufs_clear_frags(inode, tmp, required, tmp + blockoff);
} else {
*phys = tmp + blockoff;
result = NULL;
@@ -383,7 +389,7 @@ repeat:
}
}
- if (block && (tmp = fs32_to_cpu(sb, ((__fs32*)bh->b_data)[block-1]) + uspi->s_fpb))
+ if (block && (tmp = fs32_to_cpu(sb, ((__fs32*)bh->b_data)[block-1])))
goal = tmp + uspi->s_fpb;
else
goal = bh->b_blocknr + uspi->s_fpb;
@@ -397,7 +403,8 @@ repeat:
if (!phys) {
- result = ufs_clear_frags(inode, tmp + blockoff, uspi->s_fpb);
+ result = ufs_clear_frags(inode, tmp, uspi->s_fpb,
+ tmp + blockoff);
} else {
*phys = tmp + blockoff;
*new = 1;
diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c
index c9b55872079b..ea11d04c41a0 100644
--- a/fs/ufs/truncate.c
+++ b/fs/ufs/truncate.c
@@ -375,17 +375,15 @@ static int ufs_alloc_lastblock(struct inode *inode)
int err = 0;
struct address_space *mapping = inode->i_mapping;
struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi;
- struct ufs_inode_info *ufsi = UFS_I(inode);
unsigned lastfrag, i, end;
struct page *lastpage;
struct buffer_head *bh;
lastfrag = (i_size_read(inode) + uspi->s_fsize - 1) >> uspi->s_fshift;
- if (!lastfrag) {
- ufsi->i_lastfrag = 0;
+ if (!lastfrag)
goto out;
- }
+
lastfrag--;
lastpage = ufs_get_locked_page(mapping, lastfrag >>
@@ -400,25 +398,25 @@ static int ufs_alloc_lastblock(struct inode *inode)
for (i = 0; i < end; ++i)
bh = bh->b_this_page;
- if (!buffer_mapped(bh)) {
- err = ufs_getfrag_block(inode, lastfrag, bh, 1);
-
- if (unlikely(err))
- goto out_unlock;
-
- if (buffer_new(bh)) {
- clear_buffer_new(bh);
- unmap_underlying_metadata(bh->b_bdev,
- bh->b_blocknr);
- /*
- * we do not zeroize fragment, because of
- * if it maped to hole, it already contains zeroes
- */
- set_buffer_uptodate(bh);
- mark_buffer_dirty(bh);
- set_page_dirty(lastpage);
- }
+
+ err = ufs_getfrag_block(inode, lastfrag, bh, 1);
+
+ if (unlikely(err))
+ goto out_unlock;
+
+ if (buffer_new(bh)) {
+ clear_buffer_new(bh);
+ unmap_underlying_metadata(bh->b_bdev,
+ bh->b_blocknr);
+ /*
+ * we do not zeroize fragment, because of
+ * if it maped to hole, it already contains zeroes
+ */
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ set_page_dirty(lastpage);
}
+
out_unlock:
ufs_put_locked_page(lastpage);
out:
@@ -440,23 +438,11 @@ int ufs_truncate(struct inode *inode, loff_t old_i_size)
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
return -EPERM;
- if (inode->i_size > old_i_size) {
- /*
- * if we expand file we should care about
- * allocation of block for last byte first of all
- */
- err = ufs_alloc_lastblock(inode);
+ err = ufs_alloc_lastblock(inode);
- if (err) {
- i_size_write(inode, old_i_size);
- goto out;
- }
- /*
- * go away, because of we expand file, and we do not
- * need free blocks, and zeroizes page
- */
- lock_kernel();
- goto almost_end;
+ if (err) {
+ i_size_write(inode, old_i_size);
+ goto out;
}
block_truncate_page(inode->i_mapping, inode->i_size, ufs_getfrag_block);
@@ -477,21 +463,8 @@ int ufs_truncate(struct inode *inode, loff_t old_i_size)
yield();
}
- if (inode->i_size < old_i_size) {
- /*
- * now we should have enough space
- * to allocate block for last byte
- */
- err = ufs_alloc_lastblock(inode);
- if (err)
- /*
- * looks like all the same - we have no space,
- * but we truncate file already
- */
- inode->i_size = (ufsi->i_lastfrag - 1) * uspi->s_fsize;
- }
-almost_end:
inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
+ ufsi->i_lastfrag = DIRECT_FRAGMENT;
unlock_kernel();
mark_inode_dirty(inode);
out:
generated by cgit v1.2.3 (git 2.39.0) at 2025-03-13 03:53:43 +0300