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fs/file.c: replace alloc_fdmem() with kvmalloc() alternative 

There is no real reason to duplicate kvmalloc* helpers so drop
alloc_fdmem and replace it with the appropriate library function.

Link: http://lkml.kernel.org/r/20170531155145.17111-2-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michal Hocko 2017-07-06 15:36:19 -07:00 committed by Linus Torvalds
parent b74271e40e
commit c823bd9244
1 changed files with 4 additions and 18 deletions
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22
fs/file.c
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@ -30,21 +30,6 @@ unsigned int sysctl_nr_open_min = BITS_PER_LONG;
unsigned int sysctl_nr_open_max =
__const_min(INT_MAX, ~(size_t)0/sizeof(void *)) & -BITS_PER_LONG;
static void *alloc_fdmem(size_t size)
{
/*
* Very large allocations can stress page reclaim, so fall back to
* vmalloc() if the allocation size will be considered "large" by the VM.
*/
if (size <= (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER)) {
void *data = kmalloc(size, GFP_KERNEL_ACCOUNT |
__GFP_NOWARN | __GFP_NORETRY);
if (data != NULL)
return data;
}
return __vmalloc(size, GFP_KERNEL_ACCOUNT, PAGE_KERNEL);
}
static void __free_fdtable(struct fdtable *fdt)
{
kvfree(fdt->fd);
@ -131,13 +116,14 @@ static struct fdtable * alloc_fdtable(unsigned int nr)
if (!fdt)
goto out;
fdt->max_fds = nr;
data = alloc_fdmem(nr * sizeof(struct file *));
data = kvmalloc_array(nr, sizeof(struct file *), GFP_KERNEL_ACCOUNT);
if (!data)
goto out_fdt;
fdt->fd = data;
data = alloc_fdmem(max_t(size_t,
2 * nr / BITS_PER_BYTE + BITBIT_SIZE(nr), L1_CACHE_BYTES));
data = kvmalloc(max_t(size_t,
2 * nr / BITS_PER_BYTE + BITBIT_SIZE(nr), L1_CACHE_BYTES),
GFP_KERNEL_ACCOUNT);
if (!data)
goto out_arr;
fdt->open_fds = data;