summaryrefslogtreecommitdiffstats
path: root/drivers/char
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 09:10:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 09:10:19 -0700
commit790eac5640abf7a57fa3a644386df330e18c11b0 (patch)
tree08de20bde44f59e51b91ff473a71047c2957e8c9 /drivers/char
parent0b0585c3e192967cb2ef0ac0816eb8a8c8d99840 (diff)
parent48bde8d3620f5f3c6ae9ff599eb404055ae51664 (diff)
downloadop-kernel-dev-790eac5640abf7a57fa3a644386df330e18c11b0.zip
op-kernel-dev-790eac5640abf7a57fa3a644386df330e18c11b0.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull second set of VFS changes from Al Viro: "Assorted f_pos race fixes, making do_splice_direct() safe to call with i_mutex on parent, O_TMPFILE support, Jeff's locks.c series, ->d_hash/->d_compare calling conventions changes from Linus, misc stuff all over the place." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits) Document ->tmpfile() ext4: ->tmpfile() support vfs: export lseek_execute() to modules lseek_execute() doesn't need an inode passed to it block_dev: switch to fixed_size_llseek() cpqphp_sysfs: switch to fixed_size_llseek() tile-srom: switch to fixed_size_llseek() proc_powerpc: switch to fixed_size_llseek() ubi/cdev: switch to fixed_size_llseek() pci/proc: switch to fixed_size_llseek() isapnp: switch to fixed_size_llseek() lpfc: switch to fixed_size_llseek() locks: give the blocked_hash its own spinlock locks: add a new "lm_owner_key" lock operation locks: turn the blocked_list into a hashtable locks: convert fl_link to a hlist_node locks: avoid taking global lock if possible when waking up blocked waiters locks: protect most of the file_lock handling with i_lock locks: encapsulate the fl_link list handling locks: make "added" in __posix_lock_file a bool ...
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/ps3flash.c28
-rw-r--r--drivers/char/tile-srom.c28
2 files changed, 5 insertions, 51 deletions
diff --git a/drivers/char/ps3flash.c b/drivers/char/ps3flash.c
index 8cafa9c..0b311fa 100644
--- a/drivers/char/ps3flash.c
+++ b/drivers/char/ps3flash.c
@@ -98,32 +98,8 @@ static int ps3flash_fetch(struct ps3_storage_device *dev, u64 start_sector)
static loff_t ps3flash_llseek(struct file *file, loff_t offset, int origin)
{
struct ps3_storage_device *dev = ps3flash_dev;
- loff_t res;
-
- mutex_lock(&file->f_mapping->host->i_mutex);
- switch (origin) {
- case 0:
- break;
- case 1:
- offset += file->f_pos;
- break;
- case 2:
- offset += dev->regions[dev->region_idx].size*dev->blk_size;
- break;
- default:
- offset = -1;
- }
- if (offset < 0) {
- res = -EINVAL;
- goto out;
- }
-
- file->f_pos = offset;
- res = file->f_pos;
-
-out:
- mutex_unlock(&file->f_mapping->host->i_mutex);
- return res;
+ return generic_file_llseek_size(file, offset, origin, MAX_LFS_FILESIZE,
+ dev->regions[dev->region_idx].size*dev->blk_size);
}
static ssize_t ps3flash_read(char __user *userbuf, void *kernelbuf,
diff --git a/drivers/char/tile-srom.c b/drivers/char/tile-srom.c
index 2e2036e..7faeb1c 100644
--- a/drivers/char/tile-srom.c
+++ b/drivers/char/tile-srom.c
@@ -273,32 +273,10 @@ static ssize_t srom_write(struct file *filp, const char __user *buf,
}
/* Provide our own implementation so we can use srom->total_size. */
-loff_t srom_llseek(struct file *filp, loff_t offset, int origin)
+loff_t srom_llseek(struct file *file, loff_t offset, int origin)
{
- struct srom_dev *srom = filp->private_data;
-
- if (mutex_lock_interruptible(&srom->lock))
- return -ERESTARTSYS;
-
- switch (origin) {
- case SEEK_END:
- offset += srom->total_size;
- break;
- case SEEK_CUR:
- offset += filp->f_pos;
- break;
- }
-
- if (offset < 0 || offset > srom->total_size) {
- offset = -EINVAL;
- } else {
- filp->f_pos = offset;
- filp->f_version = 0;
- }
-
- mutex_unlock(&srom->lock);
-
- return offset;
+ struct srom_dev *srom = file->private_data;
+ return fixed_size_llseek(file, offset, origin, srom->total_size);
}
static ssize_t total_show(struct device *dev,
OpenPOWER on IntegriCloud