summaryrefslogtreecommitdiffstats
path: root/fs/pstore/inode.c
AgeCommit message (Collapse)AuthorFilesLines
2011-07-22pstore: Add extra context for writes and erasesMatthew Garrett1-2/+4
EFI only provides small amounts of individual storage, and conventionally puts metadata in the storage variable name. Rather than add a metadata header to the (already limited) variable storage, it's easier for us to modify pstore to pass all the information we need to construct a unique variable name to the appropriate functions. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2011-07-22pstore: Extend API for more flexibility in new backendsMatthew Garrett1-5/+5
Some pstore implementations may not have a static context, so extend the API to pass the pstore_info struct to all calls and allow for a context pointer. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2011-03-21pstore: use mount option instead sysfs to tweak kmsg_bytesLuck, Tony1-22/+46
/sys/fs is a somewhat strange way to tweak what could more obviously be tuned with a mount option. Suggested-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-21pstore: fix leaking ->i_privateTony Luck1-1/+7
Move kfree() of i_private out of ->unlink() and into ->evict_inode() Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-17Some fixes for pstoreTony Luck1-60/+56
1) Change from ->get_sb() to ->mount() 2) Use mount_single() instead of mount_nodev() 3) Pulled in ramfs_get_inode() & trimmed to what I need for pstore 4) Drop the ugly pstore_writefile() Just save data using kmalloc() and provide a pstore_file_read() that uses simple_read_from_buffer(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-01-06pstore: fix build warning for unused return value from sysfs_create_fileTony Luck1-11/+16
fs/pstore/inode.c: In function 'init_pstore_fs': fs/pstore/inode.c:266: warning: ignoring return value of 'sysfs_create_file', declared with attribute warn_unused_result Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Tony Luck <tony.luck@intel.com>
2010-12-28pstore: new filesystem interface to platform persistent storageTony Luck1-0/+280
Some platforms have a small amount of non-volatile storage that can be used to store information useful to diagnose the cause of a system crash. This is the generic part of a file system interface that presents information from the crash as a series of files in /dev/pstore. Once the information has been seen, the underlying storage is freed by deleting the files. Signed-off-by: Tony Luck <tony.luck@intel.com>