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xfs: remove kmem_realloc() 

Remove kmem_realloc() function and convert its users to use MM API
directly (krealloc())

Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Carlos Maiolino 2020-08-26 14:05:56 -07:00 committed by Darrick J. Wong
parent f4d51dffc6
commit 771915c4f6
7 changed files with 8 additions and 32 deletions
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22
fs/xfs/kmem.c
View File

@ -93,25 +93,3 @@ kmem_alloc_large(size_t size, xfs_km_flags_t flags)
return ptr;
return __kmem_vmalloc(size, flags);
}
void *
kmem_realloc(const void *old, size_t newsize, xfs_km_flags_t flags)
{
int retries = 0;
gfp_t lflags = kmem_flags_convert(flags);
void *ptr;
trace_kmem_realloc(newsize, flags, _RET_IP_);
do {
ptr = krealloc(old, newsize, lflags);
if (ptr || (flags & KM_MAYFAIL))
return ptr;
if (!(++retries % 100))
xfs_err(NULL,
"%s(%u) possible memory allocation deadlock size %zu in %s (mode:0x%x)",
current->comm, current->pid,
newsize, __func__, lflags);
congestion_wait(BLK_RW_ASYNC, HZ/50);
} while (1);
}

1
fs/xfs/kmem.h
View File

@ -59,7 +59,6 @@ kmem_flags_convert(xfs_km_flags_t flags)
extern void *kmem_alloc(size_t, xfs_km_flags_t);
extern void *kmem_alloc_io(size_t size, int align_mask, xfs_km_flags_t flags);
extern void *kmem_alloc_large(size_t size, xfs_km_flags_t);
extern void *kmem_realloc(const void *, size_t, xfs_km_flags_t);
static inline void kmem_free(const void *ptr)
{
kvfree(ptr);

2
fs/xfs/libxfs/xfs_iext_tree.c
View File

@ -603,7 +603,7 @@ xfs_iext_realloc_root(
if (new_size / sizeof(struct xfs_iext_rec) == RECS_PER_LEAF)
new_size = NODE_SIZE;
new = kmem_realloc(ifp->if_u1.if_root, new_size, KM_NOFS);
new = krealloc(ifp->if_u1.if_root, new_size, GFP_NOFS | __GFP_NOFAIL);
memset(new + ifp->if_bytes, 0, new_size - ifp->if_bytes);
ifp->if_u1.if_root = new;
cur->leaf = new;

8
fs/xfs/libxfs/xfs_inode_fork.c
View File

@ -386,8 +386,8 @@ xfs_iroot_realloc(
cur_max = xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0);
new_max = cur_max + rec_diff;
new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, new_max);
ifp->if_broot = kmem_realloc(ifp->if_broot, new_size,
KM_NOFS);
ifp->if_broot = krealloc(ifp->if_broot, new_size,
GFP_NOFS | __GFP_NOFAIL);
op = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1,
ifp->if_broot_bytes);
np = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1,
@ -496,8 +496,8 @@ xfs_idata_realloc(
* in size so that it can be logged and stay on word boundaries.
* We enforce that here.
*/
ifp->if_u1.if_data = kmem_realloc(ifp->if_u1.if_data,
roundup(new_size, 4), KM_NOFS);
ifp->if_u1.if_data = krealloc(ifp->if_u1.if_data, roundup(new_size, 4),
GFP_NOFS | __GFP_NOFAIL);
ifp->if_bytes = new_size;
}

2
fs/xfs/xfs_log_recover.c
View File

@ -2097,7 +2097,7 @@ xlog_recover_add_to_cont_trans(
old_ptr = item->ri_buf[item->ri_cnt-1].i_addr;
old_len = item->ri_buf[item->ri_cnt-1].i_len;
ptr = kmem_realloc(old_ptr, len + old_len, 0);
ptr = krealloc(old_ptr, len + old_len, GFP_KERNEL | __GFP_NOFAIL);
memcpy(&ptr[old_len], dp, len);
item->ri_buf[item->ri_cnt-1].i_len += len;
item->ri_buf[item->ri_cnt-1].i_addr = ptr;

4
fs/xfs/xfs_mount.c
View File

@ -80,9 +80,9 @@ xfs_uuid_mount(
}
if (hole < 0) {
xfs_uuid_table = kmem_realloc(xfs_uuid_table,
xfs_uuid_table = krealloc(xfs_uuid_table,
(xfs_uuid_table_size + 1) * sizeof(*xfs_uuid_table),
0);
GFP_KERNEL | __GFP_NOFAIL);
hole = xfs_uuid_table_size++;
}
xfs_uuid_table[hole] = *uuid;

1
fs/xfs/xfs_trace.h
View File

@ -3676,7 +3676,6 @@ DEFINE_EVENT(xfs_kmem_class, name, \
DEFINE_KMEM_EVENT(kmem_alloc);
DEFINE_KMEM_EVENT(kmem_alloc_io);
DEFINE_KMEM_EVENT(kmem_alloc_large);
DEFINE_KMEM_EVENT(kmem_realloc);
TRACE_EVENT(xfs_check_new_dalign,
TP_PROTO(struct xfs_mount *mp, int new_dalign, xfs_ino_t calc_rootino),