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epyc7002
linux_dsm_epyc7002/fs/xfs/xfs_linux.h
Darrick J. Wong 25219dbfa7 xfs: fix fallocate functions when rtextsize is larger than 1 
In commit fe341eb151, I forgot that xfs_free_file_space isn't strictly
a "remove mapped blocks" function.  It is actually a function to zero
file space by punching out the middle and writing zeroes to the
unaligned ends of the specified range.  Therefore, putting a rtextsize
alignment check in that function is wrong because that breaks unaligned
ZERO_RANGE on the realtime volume.

Furthermore, xfs_file_fallocate already has alignment checks for the
functions require the file range to be aligned to the size of a
fundamental allocation unit (which is 1 FSB on the data volume and 1 rt
extent on the realtime volume).  Create a new helper to check fallocate
arguments against the realtiem allocation unit size, fix the fallocate
frontend to use it, fix free_file_space to delete the correct range, and
remove a now redundant check from insert_file_space.

NOTE: The realtime extent size is not required to be a power of two!

Fixes: fe341eb151 ("xfs: ensure that fpunch, fcollapse, and finsert operations are aligned to rt extent size")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
2020-10-21 09:05:19 -07:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*/
#ifndef __XFS_LINUX__
#define __XFS_LINUX__
#include <linux/types.h>
#include <linux/uuid.h>
/*
* Kernel specific type declarations for XFS
*/
typedef __s64 xfs_off_t; /* <file offset> type */
typedef unsigned long long xfs_ino_t; /* <inode> type */
typedef __s64 xfs_daddr_t; /* <disk address> type */
typedef __u32 xfs_dev_t;
typedef __u32 xfs_nlink_t;
#include "xfs_types.h"
#include "kmem.h"
#include "mrlock.h"
#include <linux/semaphore.h>
#include <linux/mm.h>
#include <linux/sched/mm.h>
#include <linux/kernel.h>
#include <linux/blkdev.h>
#include <linux/slab.h>
#include <linux/crc32c.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/file.h>
#include <linux/swap.h>
#include <linux/errno.h>
#include <linux/sched/signal.h>
#include <linux/bitops.h>
#include <linux/major.h>
#include <linux/pagemap.h>
#include <linux/vfs.h>
#include <linux/seq_file.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/proc_fs.h>
#include <linux/sort.h>
#include <linux/cpu.h>
#include <linux/notifier.h>
#include <linux/delay.h>
#include <linux/log2.h>
#include <linux/spinlock.h>
#include <linux/random.h>
#include <linux/ctype.h>
#include <linux/writeback.h>
#include <linux/capability.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <linux/list_sort.h>
#include <linux/ratelimit.h>
#include <linux/rhashtable.h>
#include <linux/xattr.h>
#include <asm/page.h>
#include <asm/div64.h>
#include <asm/param.h>
#include <linux/uaccess.h>
#include <asm/byteorder.h>
#include <asm/unaligned.h>
#include "xfs_fs.h"
#include "xfs_stats.h"
#include "xfs_sysctl.h"
#include "xfs_iops.h"
#include "xfs_aops.h"
#include "xfs_super.h"
#include "xfs_cksum.h"
#include "xfs_buf.h"
#include "xfs_message.h"
#ifdef __BIG_ENDIAN
#define XFS_NATIVE_HOST 1
#else
#undef XFS_NATIVE_HOST
#endif
#define irix_sgid_inherit xfs_params.sgid_inherit.val
#define irix_symlink_mode xfs_params.symlink_mode.val
#define xfs_panic_mask xfs_params.panic_mask.val
#define xfs_error_level xfs_params.error_level.val
#define xfs_syncd_centisecs xfs_params.syncd_timer.val
#define xfs_stats_clear xfs_params.stats_clear.val
#define xfs_inherit_sync xfs_params.inherit_sync.val
#define xfs_inherit_nodump xfs_params.inherit_nodump.val
#define xfs_inherit_noatime xfs_params.inherit_noatim.val
#define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val
#define xfs_rotorstep xfs_params.rotorstep.val
#define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val
#define xfs_fstrm_centisecs xfs_params.fstrm_timer.val
#define xfs_eofb_secs xfs_params.eofb_timer.val
#define xfs_cowb_secs xfs_params.cowb_timer.val
#define current_cpu() (raw_smp_processor_id())
#define current_set_flags_nested(sp, f) \
(*(sp) = current->flags, current->flags |= (f))
#define current_restore_flags_nested(sp, f) \
(current->flags = ((current->flags & ~(f)) | (*(sp) & (f))))
#define NBBY 8 /* number of bits per byte */
/*
* Size of block device i/o is parameterized here.
* Currently the system supports page-sized i/o.
*/
#define BLKDEV_IOSHIFT PAGE_SHIFT
#define BLKDEV_IOSIZE (1<<BLKDEV_IOSHIFT)
/* number of BB's per block device block */
#define BLKDEV_BB BTOBB(BLKDEV_IOSIZE)
#define ENOATTR ENODATA /* Attribute not found */
#define EWRONGFS EINVAL /* Mount with wrong filesystem type */
#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
#define EFSBADCRC EBADMSG /* Bad CRC detected */
#define __return_address __builtin_return_address(0)
/*
* Return the address of a label. Use barrier() so that the optimizer
* won't reorder code to refactor the error jumpouts into a single
* return, which throws off the reported address.
*/
#define __this_address ({ __label__ __here; __here: barrier(); &&__here; })
#define XFS_PROJID_DEFAULT 0
#define howmany(x, y) (((x)+((y)-1))/(y))
static inline void delay(long ticks)
{
schedule_timeout_uninterruptible(ticks);
}
/*
* XFS wrapper structure for sysfs support. It depends on external data
* structures and is embedded in various internal data structures to implement
* the XFS sysfs object heirarchy. Define it here for broad access throughout
* the codebase.
*/
struct xfs_kobj {
struct kobject kobject;
struct completion complete;
};
struct xstats {
struct xfsstats __percpu *xs_stats;
struct xfs_kobj xs_kobj;
};
extern struct xstats xfsstats;
static inline dev_t xfs_to_linux_dev_t(xfs_dev_t dev)
{
return MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
}
static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev)
{
return sysv_encode_dev(dev);
}
/*
* Various platform dependent calls that don't fit anywhere else
*/
#define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL)
#define xfs_stack_trace() dump_stack()
static inline uint64_t rounddown_64(uint64_t x, uint32_t y)
{
do_div(x, y);
return x * y;
}
static inline uint64_t roundup_64(uint64_t x, uint32_t y)
{
x += y - 1;
do_div(x, y);
return x * y;
}
static inline uint64_t howmany_64(uint64_t x, uint32_t y)
{
x += y - 1;
do_div(x, y);
return x;
}
int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count,
char *data, unsigned int op);
#define ASSERT_ALWAYS(expr) \
(likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
#ifdef DEBUG
#define ASSERT(expr) \
(likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
#else /* !DEBUG */
#ifdef XFS_WARN
#define ASSERT(expr) \
(likely(expr) ? (void)0 : asswarn(NULL, #expr, __FILE__, __LINE__))
#else /* !DEBUG && !XFS_WARN */
#define ASSERT(expr) ((void)0)
#endif /* XFS_WARN */
#endif /* DEBUG */
#define XFS_IS_CORRUPT(mp, expr) \
(unlikely(expr) ? xfs_corruption_error(#expr, XFS_ERRLEVEL_LOW, (mp), \
NULL, 0, __FILE__, __LINE__, \
__this_address), \
true : false)
#define STATIC static noinline
#ifdef CONFIG_XFS_RT
/*
* make sure we ignore the inode flag if the filesystem doesn't have a
* configured realtime device.
*/
#define XFS_IS_REALTIME_INODE(ip) \
(((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) && \
(ip)->i_mount->m_rtdev_targp)
#define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0)
#else
#define XFS_IS_REALTIME_INODE(ip) (0)
#define XFS_IS_REALTIME_MOUNT(mp) (0)
#endif
/*
* Starting in Linux 4.15, the %p (raw pointer value) printk modifier
* prints a hashed version of the pointer to avoid leaking kernel
* pointers into dmesg. If we're trying to debug the kernel we want the
* raw values, so override this behavior as best we can.
*/
#ifdef DEBUG
# define PTR_FMT "%px"
#else
# define PTR_FMT "%p"
#endif
#endif /* __XFS_LINUX__ */
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