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switch a bunch of places to mnt_want_write_file()

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it's both faster (in case when file has been opened for write) and cleaner.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2011-11-23 11:57:51 -05:00
parent f47ec3f283
commit a561be7100
16 changed files with 42 additions and 42 deletions
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10
fs/btrfs/ioctl.c
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@@ -201,7 +201,7 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
}
}
ret = mnt_want_write(file->f_path.mnt);
ret = mnt_want_write_file(file);
if (ret)
goto out_unlock;
@@ -1855,7 +1855,7 @@ static noinline int btrfs_ioctl_snap_destroy(struct file *file,
goto out;
}
err = mnt_want_write(file->f_path.mnt);
err = mnt_want_write_file(file);
if (err)
goto out;
@@ -1987,7 +1987,7 @@ static int btrfs_ioctl_defrag(struct file *file, void __user *argp)
if (btrfs_root_readonly(root))
return -EROFS;
ret = mnt_want_write(file->f_path.mnt);
ret = mnt_want_write_file(file);
if (ret)
return ret;
@@ -2195,7 +2195,7 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
if (btrfs_root_readonly(root))
return -EROFS;
ret = mnt_want_write(file->f_path.mnt);
ret = mnt_want_write_file(file);
if (ret)
return ret;
@@ -2549,7 +2549,7 @@ static long btrfs_ioctl_trans_start(struct file *file)
if (btrfs_root_readonly(root))
goto out;
ret = mnt_want_write(file->f_path.mnt);
ret = mnt_want_write_file(file);
if (ret)
goto out;