Following the mail is a series of patches to fix a number of FS-Cache problems, including a number of oopses. The patches can also be found at: http://git.kernel.org/?p=linux/kernel/git/dhowells/linux-fscache.git;a=shortlog;h=refs/heads/fixes The patches are as follows: (*) A patch to correctly mark cached netfs pages. This fixes an oops that shows up in the page allocator with PG_private_2 still being set on pages. (*) A patch to downgrade memory allocation levels in the cache to not try so hard and to be more willing to abort with ENOMEM. It's a cache - it doesn't matter if we can't store something. (*) A patch to check that there are no read operations outstanding on a cookie when it is relinquished. (*) A patch to make conditional some debugging prints. (*) A patch to make cookie relinquishment log a warning and wait for any outstanding reads. (*) A patch to fix up operation state handling and accounting. This fixes a BUG in __fscache_relinquish_cookie() that occurs when cache operation completion gets out of sync with the netfs releasing a cookie back to fscache. (*) Four patches to provide proper invalidation facilities so that the netfs can request a cache object be invalidated rather than retiring the cookie it has and then getting a new one. The first patch provides the hooks and management in the FS-Cache module. The second patch splits do_sys_truncate() to create a vfs_truncate() for cachefiles's invalidation to call. The third patch makes cachefiles honour invalidation requests. The fourth patch makes NFS use the invalidation call. These fix a BUG() in __fscache_read_or_alloc_pages() that occurs when an object that has operations outstanding on it gets its cookie removed. (*) Add some missing calls to note completion of retrieval operations in cachefiles. These cause an assertion failure BUG in fscache_put_operation() when it tries to destroy an operation that is still live. (*) Three patches to clean up object event IDs in FS-Cache and to stop masking off bits that needn't be masked off. (*) A patch to limit the number of I/O errors reported on a cache to 1. This prevents a lot of noise being generated from a busy cache when it is aborted. (*) A patch to handle an unexpected state in exclusive op submission in FS-Cache. This fixes a BUG that occurs in fscache_submit_exclusive_op() if it sees the cache in an aborted state due to an I/O error having occurred. (*) A patch to make nfs_migrate_page() wait for FS-Cache to finish with a page. This fixes a bad page state BUG in the memory allocator due to NFS trying to migrate a page that FS-Cache is doing stuff to. David --- David Howells (17): NFS: nfs_migrate_page() does not wait for FS-Cache to finish with a page FS-Cache: Exclusive op submission can BUG if there's been an I/O error FS-Cache: Limit the number of I/O error reports for a cache FS-Cache: Don't mask off the object event mask when printing it FS-Cache: Initialise the object event mask with the calculated mask FS-Cache: Convert the object event ID #defines into an enum CacheFiles: Add missing retrieval completions NFS: Use FS-Cache invalidation CacheFiles: Implement invalidation VFS: Make more complete truncate operation available to CacheFiles FS-Cache: Provide proper invalidation FS-Cache: Fix operation state management and accounting FS-Cache: Make cookie relinquishment wait for outstanding reads CacheFiles: Make some debugging statements conditional FS-Cache: Check that there are no read ops when cookie relinquished CacheFiles: Downgrade the requirements passed to the allocator CacheFiles: Fix the marking of cached pages Documentation/filesystems/caching/backend-api.txt | 38 +++++ Documentation/filesystems/caching/netfs-api.txt | 46 +++++- Documentation/filesystems/caching/object.txt | 23 ++- Documentation/filesystems/caching/operations.txt | 2 fs/cachefiles/interface.c | 57 +++++++- fs/cachefiles/internal.h | 2 fs/cachefiles/key.c | 2 fs/cachefiles/namei.c | 3 fs/cachefiles/rdwr.c | 114 +++++++++------ fs/cachefiles/xattr.c | 2 fs/fscache/cache.c | 8 + fs/fscache/cookie.c | 78 ++++++++++ fs/fscache/internal.h | 12 ++ fs/fscache/object-list.c | 2 fs/fscache/object.c | 98 ++++++++++++- fs/fscache/operation.c | 134 ++++++++++++++---- fs/fscache/page.c | 158 +++++++++++++++++---- fs/fscache/stats.c | 17 ++ fs/nfs/fscache.h | 20 +++ fs/nfs/inode.c | 20 ++- fs/nfs/nfs4proc.c | 2 fs/nfs/write.c | 4 - fs/open.c | 50 ++++--- include/linux/fs.h | 1 include/linux/fscache-cache.h | 71 ++++++++- include/linux/fscache.h | 50 ++++++- 26 files changed, 813 insertions(+), 201 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
