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Diffstat (limited to 'fs/reiserfs/file.c')
-rw-r--r--fs/reiserfs/file.c90
1 files changed, 49 insertions, 41 deletions
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
index ed58d843d578..5f6c32c668b6 100644
--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -15,20 +15,20 @@
#include <linux/quotaops.h>
/*
-** We pack the tails of files on file close, not at the time they are written.
-** This implies an unnecessary copy of the tail and an unnecessary indirect item
-** insertion/balancing, for files that are written in one write.
-** It avoids unnecessary tail packings (balances) for files that are written in
-** multiple writes and are small enough to have tails.
-**
-** file_release is called by the VFS layer when the file is closed. If
-** this is the last open file descriptor, and the file
-** small enough to have a tail, and the tail is currently in an
-** unformatted node, the tail is converted back into a direct item.
-**
-** We use reiserfs_truncate_file to pack the tail, since it already has
-** all the conditions coded.
-*/
+ * We pack the tails of files on file close, not at the time they are written.
+ * This implies an unnecessary copy of the tail and an unnecessary indirect item
+ * insertion/balancing, for files that are written in one write.
+ * It avoids unnecessary tail packings (balances) for files that are written in
+ * multiple writes and are small enough to have tails.
+ *
+ * file_release is called by the VFS layer when the file is closed. If
+ * this is the last open file descriptor, and the file
+ * small enough to have a tail, and the tail is currently in an
+ * unformatted node, the tail is converted back into a direct item.
+ *
+ * We use reiserfs_truncate_file to pack the tail, since it already has
+ * all the conditions coded.
+ */
static int reiserfs_file_release(struct inode *inode, struct file *filp)
{
@@ -41,10 +41,10 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
if (atomic_add_unless(&REISERFS_I(inode)->openers, -1, 1))
return 0;
- mutex_lock(&(REISERFS_I(inode)->tailpack));
+ mutex_lock(&REISERFS_I(inode)->tailpack);
if (!atomic_dec_and_test(&REISERFS_I(inode)->openers)) {
- mutex_unlock(&(REISERFS_I(inode)->tailpack));
+ mutex_unlock(&REISERFS_I(inode)->tailpack);
return 0;
}
@@ -52,31 +52,35 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
if ((!(REISERFS_I(inode)->i_flags & i_pack_on_close_mask) ||
!tail_has_to_be_packed(inode)) &&
REISERFS_I(inode)->i_prealloc_count <= 0) {
- mutex_unlock(&(REISERFS_I(inode)->tailpack));
+ mutex_unlock(&REISERFS_I(inode)->tailpack);
return 0;
}
reiserfs_write_lock(inode->i_sb);
- /* freeing preallocation only involves relogging blocks that
+ /*
+ * freeing preallocation only involves relogging blocks that
* are already in the current transaction. preallocation gets
* freed at the end of each transaction, so it is impossible for
* us to log any additional blocks (including quota blocks)
*/
err = journal_begin(&th, inode->i_sb, 1);
if (err) {
- /* uh oh, we can't allow the inode to go away while there
+ /*
+ * uh oh, we can't allow the inode to go away while there
* is still preallocation blocks pending. Try to join the
* aborted transaction
*/
jbegin_failure = err;
- err = journal_join_abort(&th, inode->i_sb, 1);
+ err = journal_join_abort(&th, inode->i_sb);
if (err) {
- /* hmpf, our choices here aren't good. We can pin the inode
- * which will disallow unmount from every happening, we can
- * do nothing, which will corrupt random memory on unmount,
- * or we can forcibly remove the file from the preallocation
- * list, which will leak blocks on disk. Lets pin the inode
+ /*
+ * hmpf, our choices here aren't good. We can pin
+ * the inode which will disallow unmount from ever
+ * happening, we can do nothing, which will corrupt
+ * random memory on unmount, or we can forcibly
+ * remove the file from the preallocation list, which
+ * will leak blocks on disk. Lets pin the inode
* and let the admin know what is going on.
*/
igrab(inode);
@@ -92,7 +96,7 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
#ifdef REISERFS_PREALLOCATE
reiserfs_discard_prealloc(&th, inode);
#endif
- err = journal_end(&th, inode->i_sb, 1);
+ err = journal_end(&th);
/* copy back the error code from journal_begin */
if (!err)
@@ -102,35 +106,38 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
(REISERFS_I(inode)->i_flags & i_pack_on_close_mask) &&
tail_has_to_be_packed(inode)) {
- /* if regular file is released by last holder and it has been
- appended (we append by unformatted node only) or its direct
- item(s) had to be converted, then it may have to be
- indirect2direct converted */
+ /*
+ * if regular file is released by last holder and it has been
+ * appended (we append by unformatted node only) or its direct
+ * item(s) had to be converted, then it may have to be
+ * indirect2direct converted
+ */
err = reiserfs_truncate_file(inode, 0);
}
- out:
+out:
reiserfs_write_unlock(inode->i_sb);
- mutex_unlock(&(REISERFS_I(inode)->tailpack));
+ mutex_unlock(&REISERFS_I(inode)->tailpack);
return err;
}
static int reiserfs_file_open(struct inode *inode, struct file *file)
{
int err = dquot_file_open(inode, file);
+
+ /* somebody might be tailpacking on final close; wait for it */
if (!atomic_inc_not_zero(&REISERFS_I(inode)->openers)) {
- /* somebody might be tailpacking on final close; wait for it */
- mutex_lock(&(REISERFS_I(inode)->tailpack));
+ mutex_lock(&REISERFS_I(inode)->tailpack);
atomic_inc(&REISERFS_I(inode)->openers);
- mutex_unlock(&(REISERFS_I(inode)->tailpack));
+ mutex_unlock(&REISERFS_I(inode)->tailpack);
}
return err;
}
void reiserfs_vfs_truncate_file(struct inode *inode)
{
- mutex_lock(&(REISERFS_I(inode)->tailpack));
+ mutex_lock(&REISERFS_I(inode)->tailpack);
reiserfs_truncate_file(inode, 1);
- mutex_unlock(&(REISERFS_I(inode)->tailpack));
+ mutex_unlock(&REISERFS_I(inode)->tailpack);
}
/* Sync a reiserfs file. */
@@ -205,10 +212,11 @@ int reiserfs_commit_page(struct inode *inode, struct page *page,
set_buffer_uptodate(bh);
if (logit) {
reiserfs_prepare_for_journal(s, bh, 1);
- journal_mark_dirty(&th, s, bh);
+ journal_mark_dirty(&th, bh);
} else if (!buffer_dirty(bh)) {
mark_buffer_dirty(bh);
- /* do data=ordered on any page past the end
+ /*
+ * do data=ordered on any page past the end
* of file and any buffer marked BH_New.
*/
if (reiserfs_data_ordered(inode->i_sb) &&
@@ -219,8 +227,8 @@ int reiserfs_commit_page(struct inode *inode, struct page *page,
}
}
if (logit) {
- ret = journal_end(&th, s, bh_per_page + 1);
- drop_write_lock:
+ ret = journal_end(&th);
+drop_write_lock:
reiserfs_write_unlock(s);
}
/*