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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
ext2: Correct maximum ext2 filesystem block size
Ext2 has traditionally supported filesystem block sizes upto page size
or upto 65536. Macro EXT2_MAX_BLOCK_SIZE is set to 4096, however that is
never used in ext2 so practically we always allowed whatever
sb_set_blocksize() accepted. Fix value of EXT2_MAX_BLOCK_SIZE because it
will be used in the next patch.
Signed-off-by: Jan Kara <jack@suse.cz>
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fs/ext2/ext2.h
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fs/ext2/ext2.h
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* Macro-instructions used to manage several block sizes
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*/
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#define EXT2_MIN_BLOCK_SIZE 1024
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#define EXT2_MAX_BLOCK_SIZE 4096
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#define EXT2_MAX_BLOCK_SIZE 65536
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#define EXT2_MIN_BLOCK_LOG_SIZE 10
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#define EXT2_BLOCK_SIZE(s) ((s)->s_blocksize)
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#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32))