linux-toradex.git/fs/fat, branch v3.11.4

fatfs: add FAT_IOCTL_GET_VOLUME_ID

2013-07-09T17:33:25+00:00

This patch, originally from Android kernel, adds vfat ioctl command
FAT_IOCTL_GET_VOLUME_ID, with this command we can get the vfat volume ID
using following code:

	ioctl(fd, FAT_IOCTL_GET_VOLUME_ID, &volume_ID)

This patch is a modified version of the patch by Mike Lockwood, with
changes from Dmitry Pervushin, who noticed the original patch makes some
volume IDs abiguous with error returns: for example, if volume id is
0xFFFFFDAD, that matches -ENOIOCTLCMD, we get "FFFFFFFF" from the user
space.

So add a parameter to ioctl to get the correct volume ID.

Android uses vfat volume ID to identify different sd card, when a new sd
card is inserted to device, android can scan the media on it and pop up
new contents.

Signed-off-by: Bintian Wang 
Cc: dmitry pervushin 
Cc: Mike Lockwood 
Cc: Colin Cross 
Acked-by: OGAWA Hirofumi 
Cc: John Stultz 
Cc: Sean McNeil 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fs/fat: use fat_msg() to replace printk() in __fat_fs_error()

2013-07-03T23:08:01+00:00

Signed-off-by: Gu Zheng 
Acked-by: OGAWA Hirofumi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29T08:57:36+00:00

Instances either don't look at it at all (the majority of cases) or
only want it to find the superblock (which can be had as dentry->d_sb).
A few cases that want more are actually safe with dentry->d_inode -
the only precaution needed is the check that it hadn't been replaced with
NULL by rmdir() or by overwriting rename(), which case should be simply
treated as cache miss.

Signed-off-by: Linus Torvalds 
Signed-off-by: Al Viro

[readdir] convert fatfs

2013-06-29T08:57:01+00:00

... pox upon the idiotic ioctls; life would be much easier without
those.

Signed-off-by: Al Viro

fat: fix possible overflow for fat_clusters

2013-05-24T23:22:50+00:00

Intermediate value of fat_clusters can be overflowed on 32bits arch.

Reported-by: Krzysztof Strasburger 
Signed-off-by: OGAWA Hirofumi 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

aio: don't include aio.h in sched.h

2013-05-08T03:16:25+00:00

Faster kernel compiles by way of fewer unnecessary includes.

[akpm@linux-foundation.org: fix fallout]
[akpm@linux-foundation.org: fix build]
Signed-off-by: Kent Overstreet 
Cc: Zach Brown 
Cc: Felipe Balbi 
Cc: Greg Kroah-Hartman 
Cc: Mark Fasheh 
Cc: Joel Becker 
Cc: Rusty Russell 
Cc: Jens Axboe 
Cc: Asai Thambi S P 
Cc: Selvan Mani 
Cc: Sam Bradshaw 
Cc: Jeff Moyer 
Cc: Al Viro 
Cc: Benjamin LaHaise 
Reviewed-by: "Theodore Ts'o" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fat (exportfs): rebuild directory-inode if fat_dget()

2013-04-30T01:28:41+00:00

This patch enables rebuilding of directory inodes which are not present in
the cache.This is done by traversing the disk clusters to find the
directory entry of the parent directory and using its i_pos to build the
inode.

The traversal is done by fat_scan_logstart() which is similar to
fat_scan() but matches i_pos values instead of names.fat_scan_logstart()
needs an inode parameter to work, for which a dummy inode is created by
it's caller fat_rebuild_parent().  This dummy inode is destroyed after the
traversal completes.

All this is done  only if the nostale_ro nfs mount option is specified.

Signed-off-by: Namjae Jeon 
Signed-off-by: Ravishankar N 
Signed-off-by: Amit Sahrawat 
Acked-by: OGAWA Hirofumi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fat (exportfs): rebuild inode if ilookup() fails

2013-04-30T01:28:41+00:00

If the cache lookups fail,use the i_pos value to find the directory entry
of the inode and rebuild the inode.Since this involves accessing the FAT
media, do this only if the nostale_ro nfs mount option is specified.

Signed-off-by: Namjae Jeon 
Signed-off-by: Ravishankar N 
Signed-off-by: Amit Sahrawat 
Acked-by: OGAWA Hirofumi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fat: restructure export_operations

2013-04-30T01:28:40+00:00

Define two nfs export_operation structures,one for 'stale_rw' mounts and
the other for 'nostale_ro'.  The latter uses i_pos as a basis for encoding
and decoding file handles.

Also, assign i_pos to kstat->ino.  The logic for rebuilding the inode is
added in the subsequent patches.

Signed-off-by: Namjae Jeon 
Signed-off-by: Ravishankar N 
Signed-off-by: Amit Sahrawat 
Acked-by: OGAWA Hirofumi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fat: introduce a helper fat_get_blknr_offset()

2013-04-30T01:28:40+00:00

Introduce helper function to get the block number and offset for a given
i_pos value.  Use it in __fat_write_inode() now and later on in nfs.c

Signed-off-by: Namjae Jeon 
Signed-off-by: Ravishankar N 
Signed-off-by: Amit Sahrawat 
Acked-by: OGAWA Hirofumi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds