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| author |   Zeng Jingxiang <linuszeng@tencent.com> | 2022-07-20 16:30:29 +0800 |
|---|---|---|
| committer |   Jan Kara <jack@suse.cz> | 2022-07-26 12:46:36 +0200 |
| commit | bd6e21a9044ffc0d15cc362dcc10662e644a43bc (patch) | |
| tree | 3065c978c334209e6a8bd443f5b77ebe51c90aec /fs/reiserfs | |
| parent | fs/ext2: replace ternary operator with min_t() (diff) | |
| download | linux-dev-bd6e21a9044ffc0d15cc362dcc10662e644a43bc.tar.xz linux-dev-bd6e21a9044ffc0d15cc362dcc10662e644a43bc.zip | |
fs/reiserfs/inode: remove dead code in _get_block_create_0()
Since commit 27b3a5c51b50 ("kill-the-bkl/reiserfs: drop the fs race
watchdog from _get_block_create_0()"), which removed a label that may
have the pointer 'p' touched in its control flow, related if statements
now eval to constant value now. Just remove them.
Assigning value NULL to p here
293 char *p = NULL;
In the following conditional expression, the value of p is always NULL,
As a result, the kunmap() cannot be executed.
308 if (p)
309 kunmap(bh_result->b_page);
355 if (p)
356 kunmap(bh_result->b_page);
366 if (p)
367 kunmap(bh_result->b_page);
Also, the kmap() cannot be executed.
399 if (!p)
400 p = (char *)kmap(bh_result->b_page);
[JK: Removed unnecessary initialization of 'p' to NULL]
Signed-off-by: Zeng Jingxiang <linuszeng@tencent.com>
Signed-off-by: Kairui Song <kasong@tencent.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220720083029.1065578-1-zengjx95@gmail.com
Diffstat (limited to 'fs/reiserfs')
| -rw-r--r-- | fs/reiserfs/inode.c | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index 0cffe054b78e..c68e9329a9b0 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -290,7 +290,7 @@ static int _get_block_create_0(struct inode *inode, sector_t block, struct buffer_head *bh; struct item_head *ih, tmp_ih; b_blocknr_t blocknr; - char *p = NULL; + char *p; int chars; int ret; int result; @@ -305,8 +305,6 @@ static int _get_block_create_0(struct inode *inode, sector_t block, result = search_for_position_by_key(inode->i_sb, &key, &path); if (result != POSITION_FOUND) { pathrelse(&path); - if (p) - kunmap(bh_result->b_page); if (result == IO_ERROR) return -EIO; /* @@ -352,8 +350,6 @@ static int _get_block_create_0(struct inode *inode, sector_t block, } pathrelse(&path); - if (p) - kunmap(bh_result->b_page); return ret; } /* requested data are in direct item(s) */ @@ -363,8 +359,6 @@ static int _get_block_create_0(struct inode *inode, sector_t block, * when it is stored in direct item(s) */ pathrelse(&path); - if (p) - kunmap(bh_result->b_page); return -ENOENT; } @@ -396,9 +390,7 @@ static int _get_block_create_0(struct inode *inode, sector_t block, * sure we need to. But, this means the item might move if * kmap schedules */ - if (!p) - p = (char *)kmap(bh_result->b_page); - + p = (char *)kmap(bh_result->b_page); p += offset; memset(p, 0, inode->i_sb->s_blocksize); do { |