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| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2009-05-07 10:25:54 +0200 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2009-05-18 11:26:41 +0200 |
| commit | 383d08e045faddd89797959786233d4c0e1ace80 (patch) | |
| tree | 3f7456e3aea9b69fe18920791cf06bda6497a64f /drivers | |
| parent | Linux 2.6.30-rc6 (diff) | |
| download | linux-383d08e045faddd89797959786233d4c0e1ace80.tar.xz linux-383d08e045faddd89797959786233d4c0e1ace80.zip | |
UBI: remove redundant mutex
The @mult_mutex does not serve any purpose. We already have
@volumes_mutex and it is enough. The @volume mutex is pushed
down to the 'ubi_rename_volumes()', because we want first
to open all volumes in the exclusive mode, and then lock the
mutex, just like all other ioctl's (remove, re-size, etc) do.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/ubi/build.c | 1 | ||||
| -rw-r--r-- | drivers/mtd/ubi/cdev.c | 6 | ||||
| -rw-r--r-- | drivers/mtd/ubi/ubi.h | 2 |
3 files changed, 2 insertions, 7 deletions
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index 4048db83aef6..e0e8f47f1674 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -806,7 +806,6 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset) mutex_init(&ubi->buf_mutex); mutex_init(&ubi->ckvol_mutex); - mutex_init(&ubi->mult_mutex); mutex_init(&ubi->volumes_mutex); spin_lock_init(&ubi->volumes_lock); diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c index f8e0f68f2186..8087b0462771 100644 --- a/drivers/mtd/ubi/cdev.c +++ b/drivers/mtd/ubi/cdev.c @@ -810,9 +810,7 @@ static int rename_volumes(struct ubi_device *ubi, re->desc->vol->vol_id, re->desc->vol->name); } - mutex_lock(&ubi->volumes_mutex); err = ubi_rename_volumes(ubi, &rename_list); - mutex_unlock(&ubi->volumes_mutex); out_free: list_for_each_entry_safe(re, re1, &rename_list, list) { @@ -952,9 +950,9 @@ static long ubi_cdev_ioctl(struct file *file, unsigned int cmd, break; } - mutex_lock(&ubi->mult_mutex); + mutex_lock(&ubi->volumes_mutex); err = rename_volumes(ubi, req); - mutex_unlock(&ubi->mult_mutex); + mutex_unlock(&ubi->volumes_mutex); kfree(req); break; } diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h index c055511bb1b2..485c73f850c1 100644 --- a/drivers/mtd/ubi/ubi.h +++ b/drivers/mtd/ubi/ubi.h @@ -366,7 +366,6 @@ struct ubi_wl_entry; * @peb_buf2: another buffer of PEB size used for different purposes * @buf_mutex: protects @peb_buf1 and @peb_buf2 * @ckvol_mutex: serializes static volume checking when opening - * @mult_mutex: serializes operations on multiple volumes, like re-naming * @dbg_peb_buf: buffer of PEB size used for debugging * @dbg_buf_mutex: protects @dbg_peb_buf */ @@ -444,7 +443,6 @@ struct ubi_device { void *peb_buf2; struct mutex buf_mutex; struct mutex ckvol_mutex; - struct mutex mult_mutex; #ifdef CONFIG_MTD_UBI_DEBUG void *dbg_peb_buf; struct mutex dbg_buf_mutex; |