From eafdc7d190a944c755a9fe68573c193e6e0217e7 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Fri, 4 Jun 2010 11:29:53 +0200
Subject: sort out blockdev_direct_IO variants
Move the call to vmtruncate to get rid of accessive blocks to the callers
in prepearation of the new truncate calling sequence. This was only done
for DIO_LOCKING filesystems, so the __blockdev_direct_IO_newtrunc variant
was not needed anyway. Get rid of blockdev_direct_IO_no_locking and
its _newtrunc variant while at it as just opencoding the two additional
paramters is shorted than the name suffix.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/ext3/inode.c | 11 +++++++++++
1 file changed, 11 insertions(+)
(limited to 'fs/ext3')
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 735f0190ec2a..a66f3fe33672 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -1785,6 +1785,17 @@ retry:
ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
offset, nr_segs,
ext3_get_block, NULL);
+ /*
+ * In case of error extending write may have instantiated a few
+ * blocks outside i_size. Trim these off again.
+ */
+ if (unlikely((rw & WRITE) && ret < 0)) {
+ loff_t isize = i_size_read(inode);
+ loff_t end = offset + iov_length(iov, nr_segs);
+
+ if (end > isize)
+ vmtruncate(inode, isize);
+ }
if (ret == -ENOSPC && ext3_should_retry_alloc(inode->i_sb, &retries))
goto retry;
--
cgit v1.2.2
From 6e1db88d536adcbbfe562b2d4b7d6425784fff12 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Fri, 4 Jun 2010 11:29:57 +0200
Subject: introduce __block_write_begin
Split up the block_write_begin implementation - __block_write_begin is a new
trivial wrapper for block_prepare_write that always takes an already
allocated page and can be either called from block_write_begin or filesystem
code that already has a page allocated. Remove the handling of already
allocated pages from block_write_begin after switching all callers that
do it to __block_write_begin.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/ext3/inode.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
(limited to 'fs/ext3')
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index a66f3fe33672..5c6f07eefa4a 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -1196,8 +1196,7 @@ retry:
ret = PTR_ERR(handle);
goto out;
}
- ret = block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
- ext3_get_block);
+ ret = __block_write_begin(page, pos, len, ext3_get_block);
if (ret)
goto write_begin_failed;
--
cgit v1.2.2
From 1025774ce411f2bd4b059ad7b53f0003569b74fa Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Fri, 4 Jun 2010 11:30:02 +0200
Subject: remove inode_setattr
Replace inode_setattr with opencoded variants of it in all callers. This
moves the remaining call to vmtruncate into the filesystem methods where it
can be replaced with the proper truncate sequence.
In a few cases it was obvious that we would never end up calling vmtruncate
so it was left out in the opencoded variant:
spufs: explicitly checks for ATTR_SIZE earlier
btrfs,hugetlbfs,logfs,dlmfs: explicitly clears ATTR_SIZE earlier
ufs: contains an opencoded simple_seattr + truncate that sets the filesize just above
In addition to that ncpfs called inode_setattr with handcrafted iattrs,
which allowed to trim down the opencoded variant.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/ext3/inode.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
(limited to 'fs/ext3')
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 5c6f07eefa4a..b04d11936683 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -3208,9 +3208,17 @@ int ext3_setattr(struct dentry *dentry, struct iattr *attr)
ext3_journal_stop(handle);
}
- rc = inode_setattr(inode, attr);
+ if ((attr->ia_valid & ATTR_SIZE) &&
+ attr->ia_size != i_size_read(inode)) {
+ rc = vmtruncate(inode, attr->ia_size);
+ if (rc)
+ goto err_out;
+ }
+
+ setattr_copy(inode, attr);
+ mark_inode_dirty(inode);
- if (!rc && (ia_valid & ATTR_MODE))
+ if (ia_valid & ATTR_MODE)
rc = ext3_acl_chmod(inode);
err_out:
--
cgit v1.2.2
From ac14a95b5239d37b6082c3791b88d7ab4e8e444c Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 6 Jun 2010 07:08:19 -0400
Subject: convert ext3 to ->evict_inode()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/ext3/ialloc.c | 12 ------------
fs/ext3/inode.c | 37 +++++++++++++++++++++++++++----------
fs/ext3/super.c | 14 +-------------
3 files changed, 28 insertions(+), 35 deletions(-)
(limited to 'fs/ext3')
diff --git a/fs/ext3/ialloc.c b/fs/ext3/ialloc.c
index 498021eb88fb..4ab72db3559e 100644
--- a/fs/ext3/ialloc.c
+++ b/fs/ext3/ialloc.c
@@ -119,20 +119,8 @@ void ext3_free_inode (handle_t *handle, struct inode * inode)
ino = inode->i_ino;
ext3_debug ("freeing inode %lu\n", ino);
- /*
- * Note: we must free any quota before locking the superblock,
- * as writing the quota to disk may need the lock as well.
- */
- dquot_initialize(inode);
- ext3_xattr_delete_inode(handle, inode);
- dquot_free_inode(inode);
- dquot_drop(inode);
-
is_directory = S_ISDIR(inode->i_mode);
- /* Do this BEFORE marking the inode not in use or returning an error */
- clear_inode (inode);
-
es = EXT3_SB(sb)->s_es;
if (ino < EXT3_FIRST_INO(sb) || ino > le32_to_cpu(es->s_inodes_count)) {
ext3_error (sb, "ext3_free_inode",
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index b04d11936683..cc55cecf9fbc 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -190,18 +190,28 @@ static int truncate_restart_transaction(handle_t *handle, struct inode *inode)
}
/*
- * Called at the last iput() if i_nlink is zero.
+ * Called at inode eviction from icache
*/
-void ext3_delete_inode (struct inode * inode)
+void ext3_evict_inode (struct inode *inode)
{
+ struct ext3_block_alloc_info *rsv;
handle_t *handle;
+ int want_delete = 0;
- if (!is_bad_inode(inode))
+ if (!inode->i_nlink && !is_bad_inode(inode)) {
dquot_initialize(inode);
+ want_delete = 1;
+ }
truncate_inode_pages(&inode->i_data, 0);
- if (is_bad_inode(inode))
+ ext3_discard_reservation(inode);
+ rsv = EXT3_I(inode)->i_block_alloc_info;
+ EXT3_I(inode)->i_block_alloc_info = NULL;
+ if (unlikely(rsv))
+ kfree(rsv);
+
+ if (!want_delete)
goto no_delete;
handle = start_transaction(inode);
@@ -238,15 +248,22 @@ void ext3_delete_inode (struct inode * inode)
* having errors), but we can't free the inode if the mark_dirty
* fails.
*/
- if (ext3_mark_inode_dirty(handle, inode))
- /* If that failed, just do the required in-core inode clear. */
- clear_inode(inode);
- else
+ if (ext3_mark_inode_dirty(handle, inode)) {
+ /* If that failed, just dquot_drop() and be done with that */
+ dquot_drop(inode);
+ end_writeback(inode);
+ } else {
+ ext3_xattr_delete_inode(handle, inode);
+ dquot_free_inode(inode);
+ dquot_drop(inode);
+ end_writeback(inode);
ext3_free_inode(handle, inode);
+ }
ext3_journal_stop(handle);
return;
no_delete:
- clear_inode(inode); /* We must guarantee clearing of inode... */
+ end_writeback(inode);
+ dquot_drop(inode);
}
typedef struct {
@@ -2564,7 +2581,7 @@ out_stop:
* If this was a simple ftruncate(), and the file will remain alive
* then we need to clear up the orphan record which we created above.
* However, if this was a real unlink then we were called by
- * ext3_delete_inode(), and we allow that function to clean up the
+ * ext3_evict_inode(), and we allow that function to clean up the
* orphan info for us.
*/
if (inode->i_nlink)
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 6c953bb255e7..a951fd5c081c 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -527,17 +527,6 @@ static void destroy_inodecache(void)
kmem_cache_destroy(ext3_inode_cachep);
}
-static void ext3_clear_inode(struct inode *inode)
-{
- struct ext3_block_alloc_info *rsv = EXT3_I(inode)->i_block_alloc_info;
-
- dquot_drop(inode);
- ext3_discard_reservation(inode);
- EXT3_I(inode)->i_block_alloc_info = NULL;
- if (unlikely(rsv))
- kfree(rsv);
-}
-
static inline void ext3_show_quota_options(struct seq_file *seq, struct super_block *sb)
{
#if defined(CONFIG_QUOTA)
@@ -783,14 +772,13 @@ static const struct super_operations ext3_sops = {
.destroy_inode = ext3_destroy_inode,
.write_inode = ext3_write_inode,
.dirty_inode = ext3_dirty_inode,
- .delete_inode = ext3_delete_inode,
+ .evict_inode = ext3_evict_inode,
.put_super = ext3_put_super,
.sync_fs = ext3_sync_fs,
.freeze_fs = ext3_freeze,
.unfreeze_fs = ext3_unfreeze,
.statfs = ext3_statfs,
.remount_fs = ext3_remount,
- .clear_inode = ext3_clear_inode,
.show_options = ext3_show_options,
#ifdef CONFIG_QUOTA
.quota_read = ext3_quota_read,
--
cgit v1.2.2
From 2aec7c523291621ebb68ba8e0bd9b52a26bb76ee Mon Sep 17 00:00:00 2001
From: Andreas Gruenbacher <agruen@suse.de>
Date: Mon, 19 Jul 2010 18:19:41 +0200
Subject: mbcache: Remove unused features
The mbcache code was written to support a variable number of indexes,
but all the existing users use exactly one index. Simplify to code to
support only that case.
There are also no users of the cache entry free operation, and none of
the users keep extra data in cache entries. Remove those features as
well.
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/ext3/xattr.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
(limited to 'fs/ext3')
diff --git a/fs/ext3/xattr.c b/fs/ext3/xattr.c
index 71fb8d65e54c..e69dc6dfaa89 100644
--- a/fs/ext3/xattr.c
+++ b/fs/ext3/xattr.c
@@ -1139,7 +1139,7 @@ ext3_xattr_cache_insert(struct buffer_head *bh)
ea_bdebug(bh, "out of memory");
return;
}
- error = mb_cache_entry_insert(ce, bh->b_bdev, bh->b_blocknr, &hash);
+ error = mb_cache_entry_insert(ce, bh->b_bdev, bh->b_blocknr, hash);
if (error) {
mb_cache_entry_free(ce);
if (error == -EBUSY) {
@@ -1211,8 +1211,8 @@ ext3_xattr_cache_find(struct inode *inode, struct ext3_xattr_header *header,
return NULL; /* never share */
ea_idebug(inode, "looking for cached blocks [%x]", (int)hash);
again:
- ce = mb_cache_entry_find_first(ext3_xattr_cache, 0,
- inode->i_sb->s_bdev, hash);
+ ce = mb_cache_entry_find_first(ext3_xattr_cache, inode->i_sb->s_bdev,
+ hash);
while (ce) {
struct buffer_head *bh;
@@ -1237,7 +1237,7 @@ again:
return bh;
}
brelse(bh);
- ce = mb_cache_entry_find_next(ce, 0, inode->i_sb->s_bdev, hash);
+ ce = mb_cache_entry_find_next(ce, inode->i_sb->s_bdev, hash);
}
return NULL;
}
@@ -1313,9 +1313,7 @@ static void ext3_xattr_rehash(struct ext3_xattr_header *header,
int __init
init_ext3_xattr(void)
{
- ext3_xattr_cache = mb_cache_create("ext3_xattr", NULL,
- sizeof(struct mb_cache_entry) +
- sizeof(((struct mb_cache_entry *) 0)->e_indexes[0]), 1, 6);
+ ext3_xattr_cache = mb_cache_create("ext3_xattr", 6);
if (!ext3_xattr_cache)
return -ENOMEM;
return 0;
--
cgit v1.2.2