The patch titled
sysfs: fix error handling in binattr write()
has been removed from the -mm tree. Its filename was
sysfs-fix-error-handling-in-binattr-write.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: sysfs: fix error handling in binattr write()
From: Tejun Heo <htejun@xxxxxxxxx>
Error handling in fs/sysfs/bin.c:write() was wrong because size_t count is
used to receive return value from flush_write() which is negative on failure.
This patch updates write() such that int variable is used instead. read() is
updated the same way for consistency.
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
Cc: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
Cc: Dipankar Sarma <dipankar@xxxxxxxxxx>
Cc: Maneesh Soni <maneesh@xxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/sysfs/bin.c | 21 ++++++++-------------
1 files changed, 8 insertions(+), 13 deletions(-)
diff -puN fs/sysfs/bin.c~sysfs-fix-error-handling-in-binattr-write fs/sysfs/bin.c
--- a/fs/sysfs/bin.c~sysfs-fix-error-handling-in-binattr-write
+++ a/fs/sysfs/bin.c
@@ -33,16 +33,13 @@ fill_read(struct dentry *dentry, char *b
}
static ssize_t
-read(struct file * file, char __user * userbuf, size_t count, loff_t * off)
+read(struct file *file, char __user *userbuf, size_t bytes, loff_t *off)
{
char *buffer = file->private_data;
struct dentry *dentry = file->f_path.dentry;
int size = dentry->d_inode->i_size;
loff_t offs = *off;
- int ret;
-
- if (count > PAGE_SIZE)
- count = PAGE_SIZE;
+ int count = min_t(size_t, bytes, PAGE_SIZE);
if (size) {
if (offs > size)
@@ -51,10 +48,9 @@ read(struct file * file, char __user * u
count = size - offs;
}
- ret = fill_read(dentry, buffer, offs, count);
- if (ret < 0)
- return ret;
- count = ret;
+ count = fill_read(dentry, buffer, offs, count);
+ if (count < 0)
+ return count;
if (copy_to_user(userbuf, buffer, count))
return -EFAULT;
@@ -78,16 +74,15 @@ flush_write(struct dentry *dentry, char
return attr->write(kobj, buffer, offset, count);
}
-static ssize_t write(struct file * file, const char __user * userbuf,
- size_t count, loff_t * off)
+static ssize_t write(struct file *file, const char __user *userbuf,
+ size_t bytes, loff_t *off)
{
char *buffer = file->private_data;
struct dentry *dentry = file->f_path.dentry;
int size = dentry->d_inode->i_size;
loff_t offs = *off;
+ int count = min_t(size_t, bytes, PAGE_SIZE);
- if (count > PAGE_SIZE)
- count = PAGE_SIZE;
if (size) {
if (offs > size)
return 0;
_
Patches currently in -mm which might be from htejun@xxxxxxxxx are
origin.patch
git-libata-all.patch
sata_nv-add-back-some-verbosity-into-adma-error_handler.patch
optional-led-trigger-for-libata.patch
drivers-ata-pata_cmd640c-fix-build-with-config_pm=n.patch
git-scsi-misc.patch
introduce-config_has_dma.patch
-
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