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author | Al Viro <viro@zeniv.linux.org.uk> | 2010-07-26 09:53:30 +0200 |
---|---|---|
committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-10-29 10:16:46 +0200 |
commit | 7d945a3aa7608f68dba04083d3421e0b43052660 (patch) | |
tree | 6d236bc977372f3c93cfde81e68ef46e55159eff /fs | |
parent | logfs get_sb, part 2 (diff) | |
download | linux-7d945a3aa7608f68dba04083d3421e0b43052660.tar.xz linux-7d945a3aa7608f68dba04083d3421e0b43052660.zip |
logfs get_sb, part 3
take logfs_get_sb_device() calls to logfs_get_sb() itself
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/logfs/dev_bdev.c | 15 | ||||
-rw-r--r-- | fs/logfs/dev_mtd.c | 10 | ||||
-rw-r--r-- | fs/logfs/logfs.h | 18 | ||||
-rw-r--r-- | fs/logfs/super.c | 25 |
4 files changed, 29 insertions, 39 deletions
diff --git a/fs/logfs/dev_bdev.c b/fs/logfs/dev_bdev.c index a322fec10173..223b673dcc7b 100644 --- a/fs/logfs/dev_bdev.c +++ b/fs/logfs/dev_bdev.c @@ -9,7 +9,6 @@ #include <linux/bio.h> #include <linux/blkdev.h> #include <linux/buffer_head.h> -#include <linux/slab.h> #include <linux/gfp.h> #define PAGE_OFS(ofs) ((ofs) & (PAGE_SIZE-1)) @@ -321,27 +320,23 @@ static const struct logfs_device_ops bd_devops = { .put_device = bdev_put_device, }; -int logfs_get_sb_bdev(struct logfs_super *p, - struct file_system_type *type, int flags, - const char *devname, struct vfsmount *mnt) +int logfs_get_sb_bdev(struct logfs_super *p, struct file_system_type *type, + const char *devname) { struct block_device *bdev; bdev = open_bdev_exclusive(devname, FMODE_READ|FMODE_WRITE, type); - if (IS_ERR(bdev)) { - kfree(p); + if (IS_ERR(bdev)) return PTR_ERR(bdev); - } if (MAJOR(bdev->bd_dev) == MTD_BLOCK_MAJOR) { int mtdnr = MINOR(bdev->bd_dev); close_bdev_exclusive(bdev, FMODE_READ|FMODE_WRITE); - return logfs_get_sb_mtd(p, type, flags, mtdnr, mnt); + return logfs_get_sb_mtd(p, mtdnr); } p->s_bdev = bdev; p->s_mtd = NULL; p->s_devops = &bd_devops; - - return logfs_get_sb_device(p, type, flags, mnt); + return 0; } diff --git a/fs/logfs/dev_mtd.c b/fs/logfs/dev_mtd.c index 7b22d57d1469..9e3dbe3712ae 100644 --- a/fs/logfs/dev_mtd.c +++ b/fs/logfs/dev_mtd.c @@ -265,18 +265,14 @@ static const struct logfs_device_ops mtd_devops = { .put_device = mtd_put_device, }; -int logfs_get_sb_mtd(struct logfs_super *s, - struct file_system_type *type, int flags, - int mtdnr, struct vfsmount *mnt) +int logfs_get_sb_mtd(struct logfs_super *s, int mtdnr) { struct mtd_info *mtd = get_mtd_device(NULL, mtdnr); - if (IS_ERR(mtd)) { - kfree(s); + if (IS_ERR(mtd)) return PTR_ERR(mtd); - } s->s_bdev = NULL; s->s_mtd = mtd; s->s_devops = &mtd_devops; - return logfs_get_sb_device(s, type, flags, mnt); + return 0; } diff --git a/fs/logfs/logfs.h b/fs/logfs/logfs.h index bdd56fa4b084..5d2e66b48290 100644 --- a/fs/logfs/logfs.h +++ b/fs/logfs/logfs.h @@ -472,29 +472,23 @@ void logfs_compr_exit(void); /* dev_bdev.c */ #ifdef CONFIG_BLOCK int logfs_get_sb_bdev(struct logfs_super *s, - struct file_system_type *type, int flags, - const char *devname, struct vfsmount *mnt); + struct file_system_type *type, + const char *devname); #else static inline int logfs_get_sb_bdev(struct logfs_super *s, - struct file_system_type *type, int flags, - const char *devname, struct vfsmount *mnt) + struct file_system_type *type, + const char *devname) { - kfree(s); return -ENODEV; } #endif /* dev_mtd.c */ #ifdef CONFIG_MTD -int logfs_get_sb_mtd(struct logfs_super *s, - struct file_system_type *type, int flags, - int mtdnr, struct vfsmount *mnt); +int logfs_get_sb_mtd(struct logfs_super *s, int mtdnr) #else -static inline int logfs_get_sb_mtd(struct logfs_super *s, - struct file_system_type *type, int flags, - int mtdnr, struct vfsmount *mnt) +static inline int logfs_get_sb_mtd(struct logfs_super *s, int mtdnr) { - kfree(s); return -ENODEV; } #endif diff --git a/fs/logfs/super.c b/fs/logfs/super.c index c80837e54bb3..f57a150b4779 100644 --- a/fs/logfs/super.c +++ b/fs/logfs/super.c @@ -596,26 +596,31 @@ static int logfs_get_sb(struct file_system_type *type, int flags, { ulong mtdnr; struct logfs_super *super; + int err; super = kzalloc(sizeof(*super), GFP_KERNEL); if (!super) return -ENOMEM; if (!devname) - return logfs_get_sb_bdev(super, type, flags, devname, mnt); - if (strncmp(devname, "mtd", 3)) - return logfs_get_sb_bdev(super, type, flags, devname, mnt); - - { + err = logfs_get_sb_bdev(super, type, devname); + else if (strncmp(devname, "mtd", 3)) + err = logfs_get_sb_bdev(super, type, devname); + else { char *garbage; mtdnr = simple_strtoul(devname+3, &garbage, 0); - if (*garbage) { - kfree(super); - return -EINVAL; - } + if (*garbage) + err = -EINVAL; + else + err = logfs_get_sb_mtd(super, mtdnr); + } + + if (err) { + kfree(super); + return err; } - return logfs_get_sb_mtd(super, type, flags, mtdnr, mnt); + return logfs_get_sb_device(super, type, flags, mnt); } static struct file_system_type logfs_fs_type = { |