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authorZeng Jingxiang <linuszeng@tencent.com>2022-07-20 11:30:29 +0300
committerJan Kara <jack@suse.cz>2022-07-26 13:46:36 +0300
commitbd6e21a9044ffc0d15cc362dcc10662e644a43bc (patch)
tree3065c978c334209e6a8bd443f5b77ebe51c90aec /fs/reiserfs
parent9888725d8a640d67abe6139e84ff41bafe89b11e (diff)
downloadlinux-bd6e21a9044ffc0d15cc362dcc10662e644a43bc.tar.xz
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.c12
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 {