From: Theodore Tso <tytso@mit.edu>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org,
"linux-ext4@vger.kernel.org" <linux-ext4@vger.kernel.org>
Subject: Re: [PATCH 36/49] ext4: Add EXT4_IOC_MIGRATE ioctl
Date: Fri, 25 Jan 2008 23:15:00 -0500 [thread overview]
Message-ID: <20080126041500.GA28889@mit.edu> (raw)
In-Reply-To: <20080124055532.GC7902@skywalker>
On Thu, Jan 24, 2008 at 11:25:32AM +0530, Aneesh Kumar K.V wrote:
> +static int free_ext_idx(handle_t *handle, struct inode *inode,
> + struct ext4_extent_idx *ix)
> +{
> + int i, retval = 0;
> + ext4_fsblk_t block;
> + struct buffer_head *bh;
> + struct ext4_extent_header *eh;
> +
> + block = idx_pblock(ix);
> + bh = sb_bread(inode->i_sb, block);
> + if (!bh)
> + return -EIO;
> +
> + eh = (struct ext4_extent_header *)bh->b_data;
> + if (eh->eh_depth == 0) {
> + brelse(bh);
> + ext4_free_blocks(handle, inode, block, 1);
> + } else {
> + ix = EXT_FIRST_INDEX(eh);
> + for (i = 0; i < le16_to_cpu(eh->eh_entries); i++, ix++) {
> + retval = free_ext_idx(handle, inode, ix);
> + if (retval)
> + return retval;
> + }
> + }
> + return retval;
> +}
Aneesh, looks like if eh->eh_depth is != 0, bh gets leaked. This is
how I plan to fix it up:
+static int free_ext_idx(handle_t *handle, struct inode *inode,
+ struct ext4_extent_idx *ix)
+{
+ int i, retval = 0;
+ ext4_fsblk_t block;
+ struct buffer_head *bh;
+ struct ext4_extent_header *eh;
+
+ block = idx_pblock(ix);
+ bh = sb_bread(inode->i_sb, block);
+ if (!bh)
+ return -EIO;
+
+ eh = (struct ext4_extent_header *)bh->b_data;
+ if (eh->eh_depth == 0)
+ ext4_free_blocks(handle, inode, block, 1);
+ else {
+ ix = EXT_FIRST_INDEX(eh);
+ for (i = 0; i < le16_to_cpu(eh->eh_entries); i++, ix++) {
+ retval = free_ext_idx(handle, inode, ix);
+ if (retval)
+ break;
+ }
+ }
+ put_bh(bh);
+ return retval;
+}
- Ted
next prev parent reply other threads:[~2008-01-26 4:15 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-22 3:01 ext4 merge plans for 2.6.25 Theodore Ts'o
2008-01-22 3:01 ` [PATCH 01/49] ext4: Support large blocksize up to PAGESIZE Theodore Ts'o
2008-01-22 3:01 ` [PATCH 02/49] ext4: Avoid rec_len overflow with 64KB block size Theodore Ts'o
2008-01-22 3:01 ` [PATCH 03/49] ext4: Introduce ext4_lblk_t Theodore Ts'o
2008-01-22 3:01 ` [PATCH 04/49] ext4 extents: remove unneeded casts Theodore Ts'o
2008-01-22 3:01 ` [PATCH 05/49] ext4: add ext4_group_t, and change all group variables to this type Theodore Ts'o
2008-01-22 3:01 ` [PATCH 06/49] ext4: fixes block group number being set to a negative value Theodore Ts'o
2008-01-22 3:01 ` [PATCH 07/49] ext4: Introduce ext4_update_*_feature Theodore Ts'o
2008-01-22 3:01 ` [PATCH 08/49] ext4: Fix sparse warnings Theodore Ts'o
2008-01-22 3:01 ` [PATCH 09/49] ext4: Rename i_file_acl to i_file_acl_lo Theodore Ts'o
2008-01-22 3:01 ` [PATCH 10/49] ext4: Rename i_dir_acl to i_size_high Theodore Ts'o
2008-01-22 3:01 ` [PATCH 11/49] ext4: Add support for 48 bit inode i_blocks Theodore Ts'o
2008-01-22 3:01 ` [PATCH 12/49] ext4: Support large files Theodore Ts'o
2008-01-22 3:01 ` [PATCH 13/49] ext4: different maxbytes functions for bitmap & extent files Theodore Ts'o
2008-01-22 3:01 ` [PATCH 14/49] ext4: export iov_shorten from kernel for ext4's use Theodore Ts'o
2008-01-22 3:01 ` [PATCH 15/49] ext4: store maxbytes for bitmapped files and return EFBIG as appropriate Theodore Ts'o
2008-01-22 3:01 ` [PATCH 16/49] ext2: Fix the max file size for ext2 file system Theodore Ts'o
2008-01-22 3:01 ` [PATCH 17/49] ext3: Fix the max file size for ext3 " Theodore Ts'o
2008-01-22 3:01 ` [PATCH 18/49] ext4: sync up block group descriptor with e2fsprogs Theodore Ts'o
2008-01-22 3:01 ` [PATCH 19/49] ext4: Return after ext4_error in case of failures Theodore Ts'o
2008-01-22 3:01 ` [PATCH 20/49] ext4/super.c: fix #ifdef's (CONFIG_EXT4_* -> CONFIG_EXT4DEV_*) Theodore Ts'o
2008-01-22 3:02 ` [PATCH 21/49] ext4: fix oops on corrupted ext4 mount Theodore Ts'o
2008-01-22 3:02 ` [PATCH 22/49] ext4: Change the default behaviour on error Theodore Ts'o
2008-01-22 3:02 ` [PATCH 23/49] Add buffer head related helper functions Theodore Ts'o
2008-01-22 3:02 ` [PATCH 24/49] ext4: add block bitmap validation Theodore Ts'o
2008-01-22 3:02 ` [PATCH 25/49] jbd2: Remove printk from J_ASSERT to preserve registers during BUG Theodore Ts'o
2008-01-22 3:02 ` [PATCH 26/49] jbd2: Fix assertion failure in fs/jbd2/checkpoint.c Theodore Ts'o
2008-01-22 3:02 ` [PATCH 27/49] ext4: Check for the correct error return from Theodore Ts'o
2008-01-22 3:02 ` [PATCH 28/49] ext4: remove unused code from ext4_find_entry() Theodore Ts'o
2008-01-22 3:02 ` [PATCH 29/49] ext4: Make ext4_get_blocks_wrap take the truncate_mutex early Theodore Ts'o
2008-01-22 3:02 ` [PATCH 30/49] ext4: Convert truncate_mutex to read write semaphore Theodore Ts'o
2008-01-22 3:02 ` [PATCH 31/49] ext4: Take read lock during overwrite case Theodore Ts'o
2008-01-22 3:02 ` [PATCH 32/49] jbd2: jbd2 stats through procfs Theodore Ts'o
2008-01-22 3:02 ` [PATCH 33/49] ext4: Add the journal checksum feature Theodore Ts'o
2008-01-22 3:02 ` [PATCH 34/49] vfs: Add 64 bit i_version support Theodore Ts'o
2008-01-22 3:02 ` [PATCH 35/49] ext4: Add inode version support in ext4 Theodore Ts'o
2008-01-22 3:02 ` [PATCH 36/49] ext4: Add EXT4_IOC_MIGRATE ioctl Theodore Ts'o
2008-01-22 3:02 ` [PATCH 37/49] ext4: Fix ext4_show_options to show the correct mount options Theodore Ts'o
2008-01-22 3:02 ` [PATCH 38/49] ext4: fix up EXT4FS_DEBUG builds Theodore Ts'o
2008-01-22 3:02 ` [PATCH 39/49] ext4: Add ext4_find_next_bit() Theodore Ts'o
2008-01-22 3:02 ` [PATCH 40/49] ext4: Add new functions for searching extent tree Theodore Ts'o
2008-01-22 3:02 ` [PATCH 41/49] ext4: Add multi block allocator for ext4 Theodore Ts'o
2008-01-22 3:02 ` [PATCH 42/49] ext4: Enable the multiblock allocator by default Theodore Ts'o
2008-01-22 3:02 ` [PATCH 43/49] ext4: Check for return value from sb_set_blocksize Theodore Ts'o
2008-01-22 3:02 ` [PATCH 44/49] ext4: fix uniniatilized extent splitting error Theodore Ts'o
2008-01-22 3:02 ` [PATCH 45/49] ext4: Use the ext4_ext_actual_len() helper function Theodore Ts'o
2008-01-22 3:02 ` [PATCH 46/49] jbd2: add lockdep support Theodore Ts'o
2008-01-22 3:02 ` [PATCH 47/49] jbd2: Mark jbd2 slabs as SLAB_TEMPORARY Theodore Ts'o
2008-01-22 3:02 ` [PATCH 48/49] jbd2: Use round-jiffies() function for the "5 second" ext4/jbd2 wakeup Theodore Ts'o
2008-01-22 3:02 ` [PATCH 49/49] jbd2: sparse pointer use of zero as null Theodore Ts'o
2008-01-23 22:07 ` [PATCH 41/49] ext4: Add multi block allocator for ext4 Andrew Morton
2008-01-23 23:20 ` Andreas Dilger
2008-01-24 7:56 ` Aneesh Kumar K.V
2008-01-24 9:04 ` Aneesh Kumar K.V
2008-01-24 14:53 ` Aneesh Kumar K.V
2008-01-28 18:45 ` Eric Sandeen
2008-01-23 22:07 ` [PATCH 36/49] ext4: Add EXT4_IOC_MIGRATE ioctl Andrew Morton
2008-01-24 5:55 ` Aneesh Kumar K.V
2008-01-26 4:15 ` Theodore Tso [this message]
2008-01-26 8:42 ` Aneesh Kumar K.V
2008-01-23 22:07 ` [PATCH 33/49] ext4: Add the journal checksum feature Andrew Morton
2008-01-23 22:40 ` Andreas Dilger
2008-01-24 21:24 ` Mingming Cao
2008-02-01 20:50 ` Girish Shilamkar
2008-01-23 22:06 ` [PATCH 30/49] ext4: Convert truncate_mutex to read write semaphore Andrew Morton
2008-01-24 5:29 ` Aneesh Kumar K.V
2008-01-24 13:00 ` Andy Whitcroft
2008-01-23 22:06 ` [PATCH 24/49] ext4: add block bitmap validation Andrew Morton
2008-01-26 13:26 ` Theodore Tso
2008-01-23 22:06 ` [PATCH 23/49] Add buffer head related helper functions Andrew Morton
2008-01-24 5:22 ` Aneesh Kumar K.V
2008-01-24 8:53 ` Andrew Morton
2008-01-23 12:43 ` ext4 merge plans for 2.6.25 Christoph Hellwig
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