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| author | Jes Sorensen <jes@sgi.com> | 2006-01-09 15:59:24 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@hera.kernel.org> | 2006-01-09 15:59:24 -0800 |
| commit | 1b1dcc1b57a49136f118a0f16367256ff9994a69 (patch) | |
| tree | b0b36d4f41d28c9d6514fb309d33c1a084d6309b /fs/sysfs/file.c | |
| parent | 794ee1baee1c26be40410233e6c20bceb2b03c08 (diff) | |
| download | linux-1b1dcc1b57a49136f118a0f16367256ff9994a69.tar.gz linux-1b1dcc1b57a49136f118a0f16367256ff9994a69.tar.bz2 linux-1b1dcc1b57a49136f118a0f16367256ff9994a69.zip | |
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
This patch converts the inode semaphore to a mutex. I have tested it on
XFS and compiled as much as one can consider on an ia64. Anyway your
luck with it might be different.
Modified-by: Ingo Molnar <mingo@elte.hu>
(finished the conversion)
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/sysfs/file.c')
| -rw-r--r-- | fs/sysfs/file.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index 4013d7905e84..d0e3d8495165 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -364,9 +364,9 @@ int sysfs_add_file(struct dentry * dir, const struct attribute * attr, int type) umode_t mode = (attr->mode & S_IALLUGO) | S_IFREG; int error = 0; - down(&dir->d_inode->i_sem); + mutex_lock(&dir->d_inode->i_mutex); error = sysfs_make_dirent(parent_sd, NULL, (void *) attr, mode, type); - up(&dir->d_inode->i_sem); + mutex_unlock(&dir->d_inode->i_mutex); return error; } @@ -398,7 +398,7 @@ int sysfs_update_file(struct kobject * kobj, const struct attribute * attr) struct dentry * victim; int res = -ENOENT; - down(&dir->d_inode->i_sem); + mutex_lock(&dir->d_inode->i_mutex); victim = lookup_one_len(attr->name, dir, strlen(attr->name)); if (!IS_ERR(victim)) { /* make sure dentry is really there */ @@ -420,7 +420,7 @@ int sysfs_update_file(struct kobject * kobj, const struct attribute * attr) */ dput(victim); } - up(&dir->d_inode->i_sem); + mutex_unlock(&dir->d_inode->i_mutex); return res; } @@ -441,22 +441,22 @@ int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode) struct iattr newattrs; int res = -ENOENT; - down(&dir->d_inode->i_sem); + mutex_lock(&dir->d_inode->i_mutex); victim = lookup_one_len(attr->name, dir, strlen(attr->name)); if (!IS_ERR(victim)) { if (victim->d_inode && (victim->d_parent->d_inode == dir->d_inode)) { inode = victim->d_inode; - down(&inode->i_sem); + mutex_lock(&inode->i_mutex); newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO); newattrs.ia_valid = ATTR_MODE | ATTR_CTIME; res = notify_change(victim, &newattrs); - up(&inode->i_sem); + mutex_unlock(&inode->i_mutex); } dput(victim); } - up(&dir->d_inode->i_sem); + mutex_unlock(&dir->d_inode->i_mutex); return res; } @@ -480,4 +480,3 @@ void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr) EXPORT_SYMBOL_GPL(sysfs_create_file); EXPORT_SYMBOL_GPL(sysfs_remove_file); EXPORT_SYMBOL_GPL(sysfs_update_file); - |