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Diffstat (limited to 'fs')
-rw-r--r--fs/compat.c10
-rw-r--r--fs/exec.c2
-rw-r--r--fs/fcntl.c5
-rw-r--r--fs/file.c56
-rw-r--r--fs/open.c3
-rw-r--r--fs/select.c10
6 files changed, 36 insertions, 50 deletions
diff --git a/fs/compat.c b/fs/compat.c
index b766964a625..0ec70e3cee0 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1679,19 +1679,19 @@ int compat_core_sys_select(int n, compat_ulong_t __user *inp,
{
fd_set_bits fds;
char *bits;
- int size, max_fdset, ret = -EINVAL;
+ int size, max_fds, ret = -EINVAL;
struct fdtable *fdt;
if (n < 0)
goto out_nofds;
- /* max_fdset can increase, so grab it once to avoid race */
+ /* max_fds can increase, so grab it once to avoid race */
rcu_read_lock();
fdt = files_fdtable(current->files);
- max_fdset = fdt->max_fdset;
+ max_fds = fdt->max_fds;
rcu_read_unlock();
- if (n > max_fdset)
- n = max_fdset;
+ if (n > max_fds)
+ n = max_fds;
/*
* We need 6 bitmaps (in/out/ex for both incoming and outgoing),
diff --git a/fs/exec.c b/fs/exec.c
index 12d8cd461b4..11fe93f7363 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -783,7 +783,7 @@ static void flush_old_files(struct files_struct * files)
j++;
i = j * __NFDBITS;
fdt = files_fdtable(files);
- if (i >= fdt->max_fds || i >= fdt->max_fdset)
+ if (i >= fdt->max_fds)
break;
set = fdt->close_on_exec->fds_bits[j];
if (!set)
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 2bdaef35da5..8e382a5d51b 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -77,10 +77,9 @@ repeat:
start = files->next_fd;
newfd = start;
- if (start < fdt->max_fdset) {
+ if (start < fdt->max_fds)
newfd = find_next_zero_bit(fdt->open_fds->fds_bits,
- fdt->max_fdset, start);
- }
+ fdt->max_fds, start);
error = -EMFILE;
if (newfd >= current->signal->rlim[RLIMIT_NOFILE].rlim_cur)
diff --git a/fs/file.c b/fs/file.c
index 51aef675470..fb3d2038dc2 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -68,8 +68,8 @@ void free_fd_array(struct file **array, int num)
static void __free_fdtable(struct fdtable *fdt)
{
- free_fdset(fdt->open_fds, fdt->max_fdset);
- free_fdset(fdt->close_on_exec, fdt->max_fdset);
+ free_fdset(fdt->open_fds, fdt->max_fds);
+ free_fdset(fdt->close_on_exec, fdt->max_fds);
free_fd_array(fdt->fd, fdt->max_fds);
kfree(fdt);
}
@@ -98,7 +98,7 @@ static void free_fdtable_rcu(struct rcu_head *rcu)
struct fdtable_defer *fddef;
BUG_ON(!fdt);
- fdset_size = fdt->max_fdset / 8;
+ fdset_size = fdt->max_fds / 8;
fdarray_size = fdt->max_fds * sizeof(struct file *);
if (fdt->free_files) {
@@ -110,13 +110,11 @@ static void free_fdtable_rcu(struct rcu_head *rcu)
kmem_cache_free(files_cachep, fdt->free_files);
return;
}
- if (fdt->max_fdset <= EMBEDDED_FD_SET_SIZE &&
- fdt->max_fds <= NR_OPEN_DEFAULT) {
+ if (fdt->max_fds <= NR_OPEN_DEFAULT)
/*
* The fdtable was embedded
*/
return;
- }
if (fdset_size <= PAGE_SIZE && fdarray_size <= PAGE_SIZE) {
kfree(fdt->open_fds);
kfree(fdt->close_on_exec);
@@ -136,9 +134,7 @@ static void free_fdtable_rcu(struct rcu_head *rcu)
void free_fdtable(struct fdtable *fdt)
{
- if (fdt->free_files ||
- fdt->max_fdset > EMBEDDED_FD_SET_SIZE ||
- fdt->max_fds > NR_OPEN_DEFAULT)
+ if (fdt->free_files || fdt->max_fds > NR_OPEN_DEFAULT)
call_rcu(&fdt->rcu, free_fdtable_rcu);
}
@@ -151,12 +147,11 @@ static void copy_fdtable(struct fdtable *nfdt, struct fdtable *fdt)
int i;
int count;
- BUG_ON(nfdt->max_fdset < fdt->max_fdset);
BUG_ON(nfdt->max_fds < fdt->max_fds);
/* Copy the existing tables and install the new pointers */
- i = fdt->max_fdset / (sizeof(unsigned long) * 8);
- count = (nfdt->max_fdset - fdt->max_fdset) / 8;
+ i = fdt->max_fds / (sizeof(unsigned long) * 8);
+ count = (nfdt->max_fds - fdt->max_fds) / 8;
/*
* Don't copy the entire array if the current fdset is
@@ -164,9 +159,9 @@ static void copy_fdtable(struct fdtable *nfdt, struct fdtable *fdt)
*/
if (i) {
memcpy (nfdt->open_fds, fdt->open_fds,
- fdt->max_fdset/8);
+ fdt->max_fds/8);
memcpy (nfdt->close_on_exec, fdt->close_on_exec,
- fdt->max_fdset/8);
+ fdt->max_fds/8);
memset (&nfdt->open_fds->fds_bits[i], 0, count);
memset (&nfdt->close_on_exec->fds_bits[i], 0, count);
}
@@ -201,7 +196,7 @@ fd_set * alloc_fdset(int num)
void free_fdset(fd_set *array, int num)
{
- if (num <= EMBEDDED_FD_SET_SIZE) /* Don't free an embedded fdset */
+ if (num <= NR_OPEN_DEFAULT) /* Don't free an embedded fdset */
return;
else if (num <= 8 * PAGE_SIZE)
kfree(array);
@@ -220,18 +215,6 @@ static struct fdtable *alloc_fdtable(int nr)
if (!fdt)
goto out;
- nfds = max_t(int, 8 * L1_CACHE_BYTES, roundup_pow_of_two(nr + 1));
- if (nfds > NR_OPEN)
- nfds = NR_OPEN;
-
- new_openset = alloc_fdset(nfds);
- new_execset = alloc_fdset(nfds);
- if (!new_openset || !new_execset)
- goto out;
- fdt->open_fds = new_openset;
- fdt->close_on_exec = new_execset;
- fdt->max_fdset = nfds;
-
nfds = NR_OPEN_DEFAULT;
/*
* Expand to the max in easy steps, and keep expanding it until
@@ -251,15 +234,21 @@ static struct fdtable *alloc_fdtable(int nr)
nfds = NR_OPEN;
}
} while (nfds <= nr);
+
+ new_openset = alloc_fdset(nfds);
+ new_execset = alloc_fdset(nfds);
+ if (!new_openset || !new_execset)
+ goto out;
+ fdt->open_fds = new_openset;
+ fdt->close_on_exec = new_execset;
+
new_fds = alloc_fd_array(nfds);
if (!new_fds)
- goto out2;
+ goto out;
fdt->fd = new_fds;
fdt->max_fds = nfds;
fdt->free_files = NULL;
return fdt;
-out2:
- nfds = fdt->max_fdset;
out:
free_fdset(new_openset, nfds);
free_fdset(new_execset, nfds);
@@ -290,7 +279,7 @@ static int expand_fdtable(struct files_struct *files, int nr)
* we dropped the lock
*/
cur_fdt = files_fdtable(files);
- if (nr >= cur_fdt->max_fds || nr >= cur_fdt->max_fdset) {
+ if (nr >= cur_fdt->max_fds) {
/* Continue as planned */
copy_fdtable(new_fdt, cur_fdt);
rcu_assign_pointer(files->fdt, new_fdt);
@@ -316,11 +305,10 @@ int expand_files(struct files_struct *files, int nr)
fdt = files_fdtable(files);
/* Do we need to expand? */
- if (nr < fdt->max_fdset && nr < fdt->max_fds)
+ if (nr < fdt->max_fds)
return 0;
/* Can we expand? */
- if (fdt->max_fdset >= NR_OPEN || fdt->max_fds >= NR_OPEN ||
- nr >= NR_OPEN)
+ if (nr >= NR_OPEN)
return -EMFILE;
/* All good, so we try */
diff --git a/fs/open.c b/fs/open.c
index 0d94319e868..c989fb4cf7b 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -864,8 +864,7 @@ int get_unused_fd(void)
repeat:
fdt = files_fdtable(files);
- fd = find_next_zero_bit(fdt->open_fds->fds_bits,
- fdt->max_fdset,
+ fd = find_next_zero_bit(fdt->open_fds->fds_bits, fdt->max_fds,
files->next_fd);
/*
diff --git a/fs/select.c b/fs/select.c
index dcbc1112b7e..fe0893afd93 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -311,7 +311,7 @@ static int core_sys_select(int n, fd_set __user *inp, fd_set __user *outp,
{
fd_set_bits fds;
void *bits;
- int ret, max_fdset;
+ int ret, max_fds;
unsigned int size;
struct fdtable *fdt;
/* Allocate small arguments on the stack to save memory and be faster */
@@ -321,13 +321,13 @@ static int core_sys_select(int n, fd_set __user *inp, fd_set __user *outp,
if (n < 0)
goto out_nofds;
- /* max_fdset can increase, so grab it once to avoid race */
+ /* max_fds can increase, so grab it once to avoid race */
rcu_read_lock();
fdt = files_fdtable(current->files);
- max_fdset = fdt->max_fdset;
+ max_fds = fdt->max_fds;
rcu_read_unlock();
- if (n > max_fdset)
- n = max_fdset;
+ if (n > max_fds)
+ n = max_fds;
/*
* We need 6 bitmaps (in/out/ex for both incoming and outgoing),
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 01:42:15 +0000