Messages in this thread |  | | Date | Tue, 15 May 2001 15:35:53 -0700 | From | "H. Peter Anvin" <> | Subject | Re: Getting FS access events |
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"Albert D. Cahalan" wrote: > > H. Peter Anvin writes: > > > This would leave no way (without introducing new interfaces) to write, > > for example, the boot block on an ext2 filesystem. Note that the > > bootblock (defined as the first 1024 bytes) is not actually used by > > the filesystem, although depending on the block size it may share a > > block with the superblock (if blocksize > 1024). > > The lack of coherency would screw this up anyway, doesn't it? > You have a block device, soon to be in the page cache, and > a superblock, also soon to be in the page cache. LILO writes to > the block device, while the ext2 driver updates the superblock. > Whatever gets written out last wins, and the other is lost. >
Albert, I *did* say "this better work or we have a problem."
-hpa
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