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Most of these were never used by the kernel code, but belong to
the time when the header file was used by both the kernel code
and the user space tools.
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
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Its better to use defined name instead of constant
Signed-off-by: Ajeet Yadav <ajeet.yadav.77@gmail.com>
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
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This commit adds an option to set the device block size used to 4K.
By default Squashfs sets the device block size (sb_min_blocksize) to 1K
or the smallest block size supported by the block device (if larger).
This, because blocks are packed together and unaligned in Squashfs,
should reduce latency.
This, however, gives poor performance on MTD NAND devices where
the optimal I/O size is 4K (even though the devices can support
smaller block sizes).
Using a 4K device block size may also improve overall I/O
performance for some file access patterns (e.g. sequential
accesses of files in filesystem order) on all media.
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
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My existing email address may stop working in a month or two, so update
email to one that will continue working.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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Extend decompressor framework to handle compression options stored in
the filesystem. These options can be used by the relevant decompressor
at initialisation time to over-ride defaults.
The presence of compression options in the filesystem is indicated by
the COMP_OPT filesystem flag. If present the data is read from the
filesystem and passed to the decompressor init function. The decompressor
init function signature has been extended to take this data.
Also update the init function signature in the glib, lzo and xz
decompressor wrappers.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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Add support for reading file systems compressed with the
XZ compression algorithm.
This patch adds the XZ decompressor wrapper code.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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Checkpatch.pl in 2.6.34 added a check for spaces between tabs.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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Add new extended inode types that store the xattr_id field.
Also add the necessary code changes to make xattrs visibile.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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Add support for listxattr and getxattr. Also add xattr definitions.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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This patch adds support for mapping xattr ids (stored in inodes)
into the on-disk location of the xattrs themselves.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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Add knowledge of lzma/lzo compression formats to the decompressor
framework. For now these are added as unsupported. Without
these entries lzma/lzo compressed filesystems will be flagged as
having unknown compression which is undesirable.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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Use the standard magic.h for btrfs and squashfs.
Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
Cc: Phillip Lougher <phillip@lougher.demon.co.uk>
Cc: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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