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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw

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* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw:
  GFS2: Whitespace fixes
  GFS2: Remove unused sysfs file
  GFS2: Be extra careful about deallocating inodes
  GFS2: Remove no_formal_ino generating code
  GFS2: Rename eattr.[ch] as xattr.[ch]
  GFS2: Clean up of extended attribute support
  GFS2: Add explanation of extended attr on-disk format
  GFS2: Add "-o errors=panic|withdraw" mount options
  GFS2: jumping to wrong label?
  GFS2: free disk inode which is deleted by remote node -V2
  GFS2: Add a document explaining GFS2's uevents
  GFS2: Add sysfs link to device
  GFS2: Replace assertion with proper error handling
  GFS2: Improve error handling in inode allocation
  GFS2: Add some more info to uevents
  GFS2: Add online uevent to GFS2
This commit is contained in:
Linus Torvalds
2009-09-14 14:35:56 -07:00
parent 041d6d0be8 86d0063656
commit 33f1de6931
21 changed files with 678 additions and 806 deletions
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22
include/linux/gfs2_ondisk.h
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@@ -333,6 +333,28 @@ struct gfs2_leaf {
/*
* Extended attribute header format
*
* This works in a similar way to dirents. There is a fixed size header
* followed by a variable length section made up of the name and the
* associated data. In the case of a "stuffed" entry, the value is
* inline directly after the name, the ea_num_ptrs entry will be
* zero in that case. For non-"stuffed" entries, there will be
* a set of pointers (aligned to 8 byte boundary) to the block(s)
* containing the value.
*
* The blocks containing the values and the blocks containing the
* extended attribute headers themselves all start with the common
* metadata header. Each inode, if it has extended attributes, will
* have either a single block containing the extended attribute headers
* or a single indirect block pointing to blocks containing the
* extended attribure headers.
*
* The maximim size of the data part of an extended attribute is 64k
* so the number of blocks required depends upon block size. Since the
* block size also determines the number of pointers in an indirect
* block, its a fairly complicated calculation to work out the maximum
* number of blocks that an inode may have relating to extended attributes.
*
*/
#define GFS2_EA_MAX_NAME_LEN 255