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34eb2a5249
linux/fs/btrfs
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Zhaolei 34eb2a5249 btrfs: Remove useless condition in start_log_trans() 
Dan Carpenter <dan.carpenter@oracle.com> reported a smatch warning
for start_log_trans():
 fs/btrfs/tree-log.c:178 start_log_trans()
 warn: we tested 'root->log_root' before and it was 'false'

 fs/btrfs/tree-log.c
 147          if (root->log_root) {
 We test "root->log_root" here.
 ...

Reason:
 Condition of:
 fs/btrfs/tree-log.c:178: if (!root->log_root) {
 is not necessary after commit: 7237f1833

 It caused a smatch warning, and no functionally error.

Fix:
 Deleting above condition will make smatch shut up,
 but a better way is to do cleanup for start_log_trans()
 to remove duplicated code and make code more readable.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
2015-08-19 14:24:49 -07:00
..
tests btrfs: qgroup: Switch self test to extent-oriented qgroup mechanism. 2015-06-10 09:26:05 -07:00
acl.c btrfs: remove useless ACL check 2014-06-09 17:20:42 -07:00
async-thread.c btrfs: Fix lockdep warning of wr_ctx->wr_lock in scrub_free_wr_ctx() 2015-06-10 07:04:52 -07:00
async-thread.h btrfs: Fix lockdep warning of wr_ctx->wr_lock in scrub_free_wr_ctx() 2015-06-10 07:04:52 -07:00
backref.c Btrfs: fix warning in backref walking 2015-08-09 07:33:50 -07:00
backref.h btrfs: cleanup, remove inode_item_info helper 2015-01-14 19:23:47 +01:00
btrfs_inode.h Btrfs: fix warning of bytes_may_use 2015-07-01 17:17:21 -07:00
check-integrity.c Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1 2015-03-25 10:52:48 -07:00
check-integrity.h block: submit_bio_wait() conversions 2013-11-24 16:33:41 -07:00
compression.c Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1 2015-03-25 10:52:48 -07:00
compression.h btrfs: constify structs with op functions or static definitions 2015-02-16 18:48:44 +01:00
ctree.c btrfs: abort transaction on btrfs_reloc_cow_block() 2015-08-09 07:07:14 -07:00
ctree.h Merge branch 'jeffm-discard-4.3' into for-linus-4.3 2015-08-09 07:35:33 -07:00
delayed-inode.c Btrfs: fill ->last_trans for delayed inode in btrfs_fill_inode. 2015-04-26 06:27:03 -07:00
delayed-inode.h Btrfs: introduce the delayed inode ref deletion for the single link inode 2014-01-28 13:20:09 -08:00
delayed-ref.c btrfs: delayed-ref: double free in btrfs_add_delayed_tree_ref() 2015-06-24 12:28:03 -07:00
delayed-ref.h btrfs: qgroup: Add the ability to skip given qgroup for old/new_roots. 2015-06-10 09:26:23 -07:00
dev-replace.c btrfs: its btrfs_err() instead of btrfs_error() 2015-07-22 18:20:53 -07:00
dev-replace.h Btrfs: add new sources for device replace code 2012-12-12 17:15:41 -05:00
dir-item.c Btrfs: make xattr replace operations atomic 2014-11-20 17:20:07 -08:00
disk-io.c Merge branch 'jeffm-discard-4.3' into for-linus-4.3 2015-08-09 07:35:33 -07:00
disk-io.h Btrfs: disk-io: replace root args iff only fs_info used 2015-02-16 18:48:43 +01:00
export.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
export.h
extent_io.c Btrfs: add support for blkio controllers 2015-08-09 07:35:06 -07:00
extent_io.h btrfs: constify structs with op functions or static definitions 2015-02-16 18:48:44 +01:00
extent_map.c Btrfs: do not move em to modified list when unpinning 2014-11-21 11:59:54 -08:00
extent_map.h Btrfs: fix NULL pointer crash when running balance and scrub concurrently 2014-06-19 14:20:55 -07:00
extent-tree.c Merge branch 'jeffm-discard-4.3' into for-linus-4.3 2015-08-09 07:35:33 -07:00
extent-tree.h btrfs: qgroup: Add new qgroup calculation function 2015-06-10 09:25:49 -07:00
file-item.c Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1 2015-03-25 10:52:48 -07:00
file.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-07-04 19:36:06 -07:00
free-space-cache.c btrfs: add missing discards when unpinning extents with -o discard 2015-07-29 08:15:29 -07:00
free-space-cache.h Btrfs: allow block group cache writeout outside critical section in commit 2015-04-10 14:07:22 -07:00
hash.c btrfs: LLVMLinux: Remove VLAIS 2014-10-14 10:51:22 +02:00
hash.h Btrfs: fix btrfs boot when compiled as built-in 2014-01-28 13:20:31 -08:00
inode-item.c Btrfs: fix fsync log replay for inodes with a mix of regular refs and extrefs 2015-01-21 18:02:05 -08:00
inode-map.c Btrfs: fix race between caching kthread and returning inode to inode cache 2015-06-30 14:36:46 -07:00
inode-map.h
inode.c Btrfs: add support for blkio controllers 2015-08-09 07:35:06 -07:00
ioctl.c btrfs: fix clone / extent-same deadlocks 2015-08-09 07:34:25 -07:00
Kconfig rcu: Make SRCU optional by using CONFIG_SRCU 2015-01-06 11:04:29 -08:00
locking.c btrfs: Add WARN_ON() for double lock in btrfs_tree_lock() 2015-08-09 07:07:14 -07:00
locking.h btrfs: fix lockups from btrfs_clear_path_blocking 2014-11-19 10:34:35 -08:00
lzo.c btrfs: constify structs with op functions or static definitions 2015-02-16 18:48:44 +01:00
Makefile Btrfs: add sanity tests for new qgroup accounting code 2014-06-09 17:20:49 -07:00
math.h btrfs: cleanup 64bit/32bit divs, compile time constants 2015-03-03 17:23:57 +01:00
ordered-data.c Btrfs: fix memory corruption on failure to submit bio for direct IO 2015-07-01 17:17:18 -07:00
ordered-data.h Btrfs: avoid syncing log in the fast fsync path when not necessary 2015-06-10 07:02:43 -07:00
orphan.c btrfs: kill the key type accessor helpers 2014-09-17 13:37:12 -07:00
print-tree.c btrfs: remove parameter blocksize from read_tree_block 2014-10-02 17:14:50 +02:00
print-tree.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
props.c btrfs: constify structs with op functions or static definitions 2015-02-16 18:48:44 +01:00
props.h Btrfs: add support for inode properties 2014-01-28 13:20:24 -08:00
qgroup.c btrfs: qgroup: allow user to clear the limitation on qgroup 2015-06-30 13:20:00 -07:00
qgroup.h btrfs: qgroup: Cleanup the old ref_node-oriented mechanism. 2015-06-10 09:26:11 -07:00
raid56.c Btrfs: add RAID 5/6 BTRFS_RBIO_REBUILD_MISSING operation 2015-08-09 07:34:26 -07:00
raid56.h Btrfs: add RAID 5/6 BTRFS_RBIO_REBUILD_MISSING operation 2015-08-09 07:34:26 -07:00
rcu-string.h Btrfs: use rcu to protect device->name 2012-06-14 21:29:16 -04:00
reada.c Btrfs: count devices correctly in readahead during RAID 5/6 replace 2015-08-09 07:34:26 -07:00
relocation.c btrfs: Remove unnecessary variants in relocation.c 2015-08-09 07:07:14 -07:00
root-tree.c Btrfs: use bitfield instead of integer data type for the some variants in btrfs_root 2014-06-09 17:20:40 -07:00
scrub.c Btrfs: fix parity scrub of RAID 5/6 with missing device 2015-08-09 07:34:26 -07:00
send.c Btrfs: use received_uuid of parent during send 2015-06-12 13:20:38 -07:00
send.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
struct-funcs.c Btrfs: rewrite BTRFS_SETGET_FUNCS 2012-07-23 16:28:06 -04:00
super.c Merge branch 'jeffm-discard-4.3' into for-linus-4.3 2015-08-09 07:35:33 -07:00
sysfs.c Btrfs: Check if kobject is initialized before put 2015-06-22 14:43:31 +02:00
sysfs.h Btrfs: sysfs: btrfs_sysfs_remove_fsid() make it non static 2015-05-27 12:27:22 +02:00
transaction.c Merge branch 'jeffm-discard-4.3' into for-linus-4.3 2015-08-09 07:35:33 -07:00
transaction.h btrfs: add missing discards when unpinning extents with -o discard 2015-07-29 08:15:29 -07:00
tree-defrag.c btrfs: let tree defrag work in SSD mode 2015-06-02 19:34:33 -07:00
tree-log.c btrfs: Remove useless condition in start_log_trans() 2015-08-19 14:24:49 -07:00
tree-log.h Btrfs: fix metadata inconsistencies after directory fsync 2015-03-26 17:56:23 -07:00
ulist.c btrfs: ulist: Add ulist_del() function. 2015-06-10 09:26:17 -07:00
ulist.h btrfs: ulist: Add ulist_del() function. 2015-06-10 09:26:17 -07:00
uuid-tree.c Btrfs: make btrfs_search_forward return with nodes unlocked 2014-09-17 13:38:02 -07:00
volumes.c Merge branch 'jeffm-discard-4.3' into for-linus-4.3 2015-08-09 07:35:33 -07:00
volumes.h Merge branch 'jeffm-discard-4.3' into for-linus-4.3 2015-08-09 07:35:33 -07:00
xattr.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-26 17:22:07 -07:00
xattr.h btrfs: use generic posix ACL infrastructure 2014-01-25 23:58:18 -05:00
zlib.c btrfs: constify structs with op functions or static definitions 2015-02-16 18:48:44 +01:00