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authorIngo Molnar <mingo@elte.hu>2008-07-18 19:31:12 +0200
committerIngo Molnar <mingo@elte.hu>2008-07-18 19:31:12 +0200
commit3e370b29d35fb01bfb92c2814d6f79bf6a2cb970 (patch)
tree3b8fb467d60bfe6a34686f4abdc3a60050ba40a4 /fs/read_write.c
parent88d1dce3a74367291f65a757fbdcaf17f042f30c (diff)
parent5b664cb235e97afbf34db9c4d77f08ebd725335e (diff)
Merge branch 'linus' into x86/pci-ioapic-boot-irq-quirks
Conflicts: drivers/pci/quirks.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/read_write.c')
-rw-r--r--fs/read_write.c38
1 files changed, 11 insertions, 27 deletions
diff --git a/fs/read_write.c b/fs/read_write.c
index f0d1240a5c6..9ba495d5a29 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -31,12 +31,12 @@ const struct file_operations generic_ro_fops = {
EXPORT_SYMBOL(generic_ro_fops);
-loff_t generic_file_llseek(struct file *file, loff_t offset, int origin)
+loff_t
+generic_file_llseek_unlocked(struct file *file, loff_t offset, int origin)
{
loff_t retval;
struct inode *inode = file->f_mapping->host;
- mutex_lock(&inode->i_mutex);
switch (origin) {
case SEEK_END:
offset += inode->i_size;
@@ -46,42 +46,26 @@ loff_t generic_file_llseek(struct file *file, loff_t offset, int origin)
}
retval = -EINVAL;
if (offset>=0 && offset<=inode->i_sb->s_maxbytes) {
+ /* Special lock needed here? */
if (offset != file->f_pos) {
file->f_pos = offset;
file->f_version = 0;
}
retval = offset;
}
- mutex_unlock(&inode->i_mutex);
return retval;
}
+EXPORT_SYMBOL(generic_file_llseek_unlocked);
-EXPORT_SYMBOL(generic_file_llseek);
-
-loff_t remote_llseek(struct file *file, loff_t offset, int origin)
+loff_t generic_file_llseek(struct file *file, loff_t offset, int origin)
{
- loff_t retval;
-
- lock_kernel();
- switch (origin) {
- case SEEK_END:
- offset += i_size_read(file->f_path.dentry->d_inode);
- break;
- case SEEK_CUR:
- offset += file->f_pos;
- }
- retval = -EINVAL;
- if (offset>=0 && offset<=file->f_path.dentry->d_inode->i_sb->s_maxbytes) {
- if (offset != file->f_pos) {
- file->f_pos = offset;
- file->f_version = 0;
- }
- retval = offset;
- }
- unlock_kernel();
- return retval;
+ loff_t n;
+ mutex_lock(&file->f_dentry->d_inode->i_mutex);
+ n = generic_file_llseek_unlocked(file, offset, origin);
+ mutex_unlock(&file->f_dentry->d_inode->i_mutex);
+ return n;
}
-EXPORT_SYMBOL(remote_llseek);
+EXPORT_SYMBOL(generic_file_llseek);
loff_t no_llseek(struct file *file, loff_t offset, int origin)
{