The error handling in xfs_refcount_recover_cow_leftovers is confused
and can potentially leak memory, so rework it to release resources
correctly on error.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reported-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Since we can only turn on the rt flag if there are no data extents,
we can safely turn off the reflink flag if the rt flag is being
turned on.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reported-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Eric Sandeen reported a gcc complaint about uninitialized error
variables, so fix that.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reported-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Since we don't unlock anything on the way out, change the label.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reported-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Now that fallocate has an explicit unshare flag again, let's try
to remove the inode reflink flag whenever the user unshares any
part of a file since checking is cheap compared to the CoW.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reported-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
The loop in _reflink_clear_inode_flag isn't necessary since we
jump out if any part of any extent is shared. Remove the loop
and we no longer need two maps, so we can save some stack use.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reported-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
There are a couple of places where we don't check the inode's
reflink flag before calling into the reflink code. Fix those,
and add some asserts so we don't make this mistake again.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reported-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Fixing the following checkpatch.pl errors:
ERROR: "foo * bar" should be "foo *bar"
+ befs_blocknr_t blockno, befs_block_run * run);
WARNING: Missing a blank line after declarations
+ struct buffer_head *bh;
+ befs_debug(sb, "---> %s length: %llu", __func__, len);
WARNING: Block comments use * on subsequent lines
+ /*
+ Double indir block, plus all the indirect blocks it maps.
(and other instances of these)
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Convert function descriptions to kernel-doc style.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Fixing typos in kernel-doc function descriptions in fs/befs/btree.c.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Fixing the following checkpatch.pl error:
ERROR: "foo * bar" should be "foo *bar"
+befs_load_sb(struct super_block *sb, befs_super_block * disk_sb)
And the following warnings:
WARNING: suspect code indent for conditional statements (8, 12)
+ if (disk_sb->fs_byte_order == BEFS_BYTEORDER_NATIVE_LE)
+ befs_sb->byte_order = BEFS_BYTESEX_LE;
WARNING: suspect code indent for conditional statements (8, 12)
+ else if (disk_sb->fs_byte_order == BEFS_BYTEORDER_NATIVE_BE)
+ befs_sb->byte_order = BEFS_BYTESEX_BE;
WARNING: break quoted strings at a space character
+ befs_error(sb, "blocksize(%u) cannot be larger"
+ "than system pagesize(%lu)", befs_sb->block_size,
WARNING: line over 80 characters
+ if (befs_sb->log_start != befs_sb->log_end || befs_sb->flags == BEFS_DIRTY) {
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Salah Triki <salah.triki@gmail.com>
The description of befs_load_sb was confusing the kernel-doc system since,
because it starts with /**, it thinks it will document the function with
kernel-doc formatting. Which it isn't.
Fix other comment style issues in the file while we are at it.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Salah Triki <salah.triki@gmail.com>
ag_shift and blocks_per_ag contain the same information in different ways,
same as block_shift and block_size do. It is worth checking this two are
consistent, but since blocks_per_ag isn't documented as mandatory to use
some implementations of befs don't enforce this, so making it non-fatal if
they don't match and just having it as a warning.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Salah Triki <salah.triki@gmail.com>
befs_dump_super_block() wasn't giving the inode_size information when
dumping all elements of the superblock. Add this element to have complete
information of the superblock.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Salah Triki <salah.triki@gmail.com>
There is no need to init block, since it will be overwitten later by
iaddr2blockno().
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
For validating superblock state, add flags field to befs_sb_info, read the state from the disk
and check if it is equal to BEFS_DIRTY.
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
befs_btree_find(), the only caller of befs_find_key(), only cares about if
the return from that function is BEFS_BT_MATCH or not. It never uses the
partial match given with BEFS_BT_PARMATCH. Make the overflow return clearer
by having BEFS_BT_OVERFLOW instead of BEFS_BT_PARMATCH.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Salah Triki <salah.triki@gmail.com>
ret is initialized to -EIO and is never modified, so remove ret and use
-EIO directly.
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
There is no need to init res, since it will be overwitten later by
befs_fblock2brun().
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Remove *befs_sb and just call BEFS_SB(sb) directly, since the returned
value by this function is only used once.
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
node_off is unconditionally set to bt_super.root_node_ptr, so no need to
init it to zero.
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
There is no need to set *value, it will be overwritten later.
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
As VFS expects, lookup inserts NULL inode to dentry when the named inode
does not exist.
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
The calls to brelse are useless since dbl_indir_block and indir_block
are NULL.
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
The only caller of befs_find_brun_direct is befs_fblock2brun, which
already validates that the block is within the range of direct blocks.
So remove the duplicate validation.
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
The only place the values of free_node_ptr and max_size are read is in
befs_dump_index_entry(), which both times it is called, it is passed the on
disk superblock. Removing assignment of unused values.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
befs_error() is used in potential errors that could happen in befs to
provide informational log messages. befs_debug() is silent when
CONFIG_BEFS_DEBUG=no, and very verbose when switched on, which is why it is
used for general debugging but not for errors.
Fix a few cases where the befs debug utility usage isn't following the
expected pattern. To make sure we have consistent information in the logs.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Use macro directly instead of via assigning it to an unchanging variable.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Acked-by: Salah Triki <salah.triki@gmail.com>
No need to dereference dentry twice to get the name when we already have
it stored in a local variable.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
This comment with a mysterious unfinished line confuses the kernel-doc
system since, because it starts with /**, it thinks it is documenting a
function.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Log error only when silent flag is not set.
Fixes: dbe6460388bc ("fs/befs/linuxvfs.c: check silent flag before logging errors")
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Acked-by: Salah Triki <salah.triki@gmail.com>
