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fs/ntfs3: Use linux/log2 is_power_of_2 function

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We do not need our own implementation for this function in this
driver. It is much better to use generic one.

Signed-off-by: Kari Argillander <kari.argillander@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This commit is contained in:
Kari Argillander 2021-08-16 13:37:32 +03:00 committed by Konstantin Komarov
parent f8d87ed9f0
commit 528c9b3d1e
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GPG Key ID: A9B0331F832407B6
3 changed files with 7 additions and 10 deletions
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5
fs/ntfs3/ntfs_fs.h
View File

@ -972,11 +972,6 @@ static inline struct buffer_head *ntfs_bread(struct super_block *sb,
return NULL;
}
static inline bool is_power_of2(size_t v)
{
return v && !(v & (v - 1));
}
static inline struct ntfs_inode *ntfs_i(struct inode *inode)
{
return container_of(inode, struct ntfs_inode, vfs_inode);

3
fs/ntfs3/run.c
View File

@ -9,6 +9,7 @@
#include <linux/blkdev.h>
#include <linux/buffer_head.h>
#include <linux/fs.h>
#include <linux/log2.h>
#include <linux/nls.h>
#include "debug.h"
@ -376,7 +377,7 @@ requires_new_range:
if (!used) {
bytes = 64;
} else if (used <= 16 * PAGE_SIZE) {
if (is_power_of2(run->allocated))
if (is_power_of_2(run->allocated))
bytes = run->allocated << 1;
else
bytes = (size_t)1

9
fs/ntfs3/super.c
View File

@ -29,6 +29,7 @@
#include <linux/exportfs.h>
#include <linux/fs.h>
#include <linux/iversion.h>
#include <linux/log2.h>
#include <linux/module.h>
#include <linux/nls.h>
#include <linux/parser.h>
@ -735,13 +736,13 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
boot_sector_size = (u32)boot->bytes_per_sector[1] << 8;
if (boot->bytes_per_sector[0] || boot_sector_size < SECTOR_SIZE ||
!is_power_of2(boot_sector_size)) {
!is_power_of_2(boot_sector_size)) {
goto out;
}
/* cluster size: 512, 1K, 2K, 4K, ... 2M */
sct_per_clst = true_sectors_per_clst(boot);
if (!is_power_of2(sct_per_clst))
if (!is_power_of_2(sct_per_clst))
goto out;
mlcn = le64_to_cpu(boot->mft_clst);
@ -757,14 +758,14 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
/* Check MFT record size */
if ((boot->record_size < 0 &&
SECTOR_SIZE > (2U << (-boot->record_size))) ||
(boot->record_size >= 0 && !is_power_of2(boot->record_size))) {
(boot->record_size >= 0 && !is_power_of_2(boot->record_size))) {
goto out;
}
/* Check index record size */
if ((boot->index_size < 0 &&
SECTOR_SIZE > (2U << (-boot->index_size))) ||
(boot->index_size >= 0 && !is_power_of2(boot->index_size))) {
(boot->index_size >= 0 && !is_power_of_2(boot->index_size))) {
goto out;
}